Proposals for CF

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249 proposals match your search

land_ice_mass_not_displacing_sea_water

new
Proposer:
Proposed Date: None
Comments:
CF mailing list link:
Units: kg (KGXX)
Updated term description
"Land ice not displacing sea water" means land ice that would not alter sea level if the ice were converted to water and added to the ocean. It excludes ice shelves (and any other sort of floating ice) and it excludes a fraction of grounded ice-sheet mass equivalent to the mass of any sea water it displaces. It includes glaciers and a portion of grounded ice-sheet mass exceeding the mass of any sea water displaced. The quantity with standard name land_ice_mass_not_displacing_sea_water is the total mass integrated over an area of land ice. The geographical extent of the ice over which the mass was calculated should be described by providing bounds on the horizontal coordinate variable or scalar with the standard name of "region" supplied according to section 6.1.1 of the CF convention.

volume_attenuated_backwards_scattering_function_in_air

new
Proposer:
Proposed Date: None
Comments:
CF mailing list link:
Units: m-1 sr-1 (PMSR)
Updated term description
Attenuation is the sum of absorption and scattering. Attenuation is sometimes called "extinction". The attenuated backwards scattering function includes the effects of two-way attenuation by the medium between a radar source and receiver. The volume scattering function is the fraction of incident radiative flux scattered into unit solid angle per unit path length. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeding pi/2 radians. A scattering_angle should not be specified with this quantity.

volume_attenuated_backwards_scattering_function_in_air_assuming_no_aerosol_or_cloud

new
Proposer:
Proposed Date: None
Comments:
CF mailing list link:
Units: m-1 sr-1 (PMSR)
Updated term description
Attenuation is the sum of absorption and scattering. Attenuation is sometimes called "extinction". The attenuated backwards scattering function includes the effects of two-way attenuation by the medium between a radar source and receiver. The volume scattering function is the fraction of incident radiative flux scattered into unit solid angle per unit path length. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeding pi/2 radians. A scattering_angle should not be specified with this quantity. A phrase "assuming_condition" indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself.

upward_derivative_of_northward_wind

new
Proposer: Emily Schlie
Proposed Date: Dec. 22, 2020
Comments:
Units: s-1 (PRSC)
Term change from Term: northward_wind_shear
The quantity with standard name upward_derivative_of_northward_wind is the derivative of the northward component of wind with respect to height. The phrase "component_derivative_of_X" means derivative of X with respect to distance in the component direction, which may be "northward", "southward", "eastward", "westward", "upward", "downward", "x" or "y". The last two indicate derivatives along the axes of the grid, in the case where they are not true longitude and latitude. A positive value indicates that X is increasing with distance along the positive direction of the axis. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity").

upward_derivative_of_eastward_wind

new
Proposer: Emily Schlie
Proposed Date: Dec. 22, 2020
Comments:
Units: s-1 (PRSC)
Term change from Term: eastward_wind_shear
The quantity with standard name upward_derivative_of_eastward_wind is the derivative of the eastward component of wind with respect to height. The phrase "component_derivative_of_X" means derivative of X with respect to distance in the component direction, which may be "northward", "southward", "eastward", "westward", "upward", "downward", "x" or "y". The last two indicate derivatives along the axes of the grid, in the case where they are not true longitude and latitude. A positive value indicates that X is increasing with distance along the positive direction of the axis. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity").

kernel_left_vector_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

fractional_kernel_rank_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

kernel_right_vector_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

kernel_rank_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

fractional_kernel_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel is a decisive component of a remote-sensing retrieval because it reveals how changes of the real atmospheric state affect the retrieved atmospheric state (Rodgers, 2000). The kernel is indispensable for data interpretation and data reuse. It is an {n x n} matrix where n is the number of atmospheric levels (the dimension of the atmospheric trace gas state vector). The elements of the kernel matrix are the ratios of the differentials: delta(x_retrieved)/delta(x_real) Often the trace gas mole fractions are strongly varying with altitude. Then it is very useful to provide the fractional averaging kernels (e.g., Keppens et al., 2015). Because delta(x)/x =delta(ln(x)), the fractional averaging kernel is the same as the logarithmic scale averaging kernel.

fractional_kernel_left_vector_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

fractional_kernel_right_vector_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

kernel_singular_values_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

kernel_of mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel is a decisive component of a remote-sensing retrieval because it reveals how changes of the real atmospheric state affect the retrieved atmospheric state (Rodgers, 2000). The kernel is indispensable for data interpretation and data reuse. It is an {n x n} matrix where n is the number of atmospheric levels (the dimension of the atmospheric trace gas state vector). The elements of the kernel matrix are the ratios of the differentials: delta(x_retrieved)/delta(x_real) Often the trace gas mole fractions are strongly varying with altitude. Then it is very useful to provide the fractional averaging kernels (e.g., Keppens et al., 2015). Because delta(x)/x =delta(ln(x)), the fractional averaging kernel is the same as the logarithmic scale averaging kernel.

fractional_kernel_singular_values_of_mole_fraction_of_methane_in_air

under discussion
Proposer: Matthias Schneider
Proposed Date: Dec. 22, 2022
Comments:
The averaging kernel matrix is rather storage intensive and in order to ensure their availability for each individual retrieval, a storage efficient format is needed. In Schneider et al. (2022) a singular vector decomposition his proposed. This allows a storage efficient provision of the averaging kernels in form of the number of leading singular vectors (the rank), the left leading singular vectors, the leading singular values, and the right leading singular vectors. Weber (2019) documents the respective storage efficiency.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_dried_aerosol_particles

under discussion
Proposer: Jonathan Gregory
Proposed Date: Oct. 12, 2022
Comments:
Units: m-1 (UPRM)
Term change from Term: volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with "specific_" instead of "volume_". The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths unless a coordinate of "radiation_wavelength" or "radiation_frequency" is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol" means that the aerosol sample has been dried from the ambient state, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

soil_liquid_water_content

accepted
Proposer: Karl E. Taylor
Proposed Date: Nov. 14, 2023
Comments:
Units: kg m-2 (KMP2)
New Term
Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including "content_of_soil_layer" are used.

integral_wrt_height_of_product_of_eastward_wind_and_mass_concentration_of_water_vapor_in_air

under discussion
Proposer: Olivier Boucher
Proposed Date: Oct. 25, 2023
Comments:
Eastward vertically-integrated moisture flux per unit length in latitude.

integral_wrt_height_of_product_of_northward_wind_and_mass_concentration_of_water_vapor_in_air

under discussion
Proposer: Olivier Boucher
Proposed Date: Oct. 25, 2023
Comments:
Northward vertically-integrated moisture flux per unit length in longitude.

surface_buoyancy_flux_into_air

accepted
Proposer: Nathan Anderson
Proposed Date: Feb. 1, 2023
Comments:
Units: m2 s-3 (SQM3)
New Term
A variable quantifying net density gains or losses in air parcel buoyancy based on turbulent heat and moisture fluxes, represented by virtual temperature flux, at the air-sea interface. Positive values indicate a buoyancy flux out of the ocean (into the air) that will destabilize the atmosphere.

surface_buoyancy_flux_into_sea_water

accepted
Proposer: Nathan Anderson
Proposed Date: Feb. 1, 2023
Comments:
Units: m2 s-3 (SQM3)
New Term
A variable quantifying net density gains or losses in water parcel buoyancy based on thermal (net surface heat flux) and haline (precipitation minus evaporation) forcings at the air-sea interface. A positive value indicates a buoyancy flux into the ocean that will stabilize (i.e., stratify) the surface ocean layer.

difference_between_sea_surface_subskin_temperature_and_sea_surface_foundation_temperature

accepted
Proposer: Nathan Anderson
Proposed Date: Feb. 1, 2023
Comments:
Units: degree_C (UPAA)
New Term
This variable quantifies the temperature difference between the top (sea_surface_subskin_temperature) and bottom (sea_surface_foundation_temperature) of the diurnal warm layer. This diurnal warm layer, caused by absorption of solar radiation in the absence of strong mixing, together with a cool skin effect, account for the total temperature difference between the sea_surface_skin_temperature and the sea_surface_foundation_temperature. The cool skin effect is associated with the turbulent and infrared radiative heat loss at the air-sea interface. Freshwater fluxes may also affect this variable (sea_surface_subskin_temperature_minus_sea_surface_foundation_temperature).

ocean_obukhov_length

accepted
Proposer: Nathan Anderson
Proposed Date: Feb. 1, 2023
Comments:
Units: m (ULAA)
New Term
The depth in the ocean, L, that buoyant production or destruction of turbulent energy balances the turbulent kinetic energy: L = -u*3 / (kB0), where u* is the oceanic surface frictional velocity, k is the von Karman constant, and B0 is the oceanic surface buoyancy flux. If the buoyancy flux is destabilizing, L is negative.

difference_between_sea_surface_subskin_temperature_and_sea_surface_temperature

accepted
Proposer: Nathan Anderson
Proposed Date: Feb. 1, 2023
Comments:
Units: degree_C (UPAA)
New Term
This variable quantifies the temperature difference between the top of the diurnal warm layer (sea_surface_subskin_temperature) and the in-situ measured sea surface temperature at depth (sea_surface_temperature). A diurnal warm layer can develop in the top few meters of the ocean through the absorption of solar radiation, if surface mixing is sufficiently weak.

difference_between_sea_surface_skin_temperature_and_sea_surface_subskin_temperature

accepted
Proposer: Nathan Anderson
Proposed Date: Feb. 1, 2023
Comments:
Units: degree_C (UPAA)
New Term
This variable quantifies the temperature difference between the skin temperature (sea_surface_skin_temperature) and the subskin temperature (sea_surface_subskin_temperature) due to the turbulent and radiative heat fluxes at the air-sea interface. This difference is commonly referred to as the “cool skin effect” as the solar radiation absorbed within the very thin thermal subskin layer is typically negligible compared to ocean surface heat loss from the combined sensible, latent, and net longwave radiation heat fluxes.

atmosphere_obukhov_length

accepted
Proposer: Nathan Anderson
Proposed Date: Feb. 1, 2023
Comments:
Units: m (ULAA)
New Term
The height in the atmosphere, L, that buoyant production or destruction of turbulent energy balances the shear production of turbulent kinetic energy: L = -u*3 / (kB0), where u* is the wind frictional velocity, k is the von Karman constant, and B0 is the atmospheric surface buoyancy flux. If the buoyancy flux is destabilizing, L is negative.

sea_surface_wave_spectral_principal_direction

under discussion
Proposer: Dawn Petraitis
Proposed Date: Sept. 13, 2023
Comments:
Units: degrees (UAAA)
New Term
The wave direction in each frequency band, calculated from the second-order components of the wave directional spectrum. Since there is an ambiguity of 180 degrees in the calculation of Alpha2 (i.e. 90 degrees and 270 degrees result in equivalent spectra), the value closer to Alpha1 is selected.

sea_surface_wave_spectral_mean_direction

under discussion
Proposer: Dawn Petraitis
Proposed Date: Sept. 13, 2023
Comments:
Units: degrees (UAAA)
New Term
The wave direction in each frequency band, calculated from the first-order components of the wave directional spectrum.

sea_surface_wave_spectral_principal_direction

under discussion
Proposer: Dawn Petraitis
Proposed Date: Sept. 13, 2023
Comments:
Units: degrees (UAAA)
New Term
The wave direction in each frequency band, calculated from the second-order components of the wave directional spectrum. Since there is an ambiguity of 180 degrees in the calculation of Alpha2 (i.e. 90 degrees and 270 degrees result in equivalent spectra), the value closer to Alpha1 is selected.

sea_surface_wave_spectral_principal_direction

under discussion
Proposer: Dawn Petraitis
Proposed Date: Sept. 13, 2023
Comments:
Units: degrees (UAAA)
New Term
The wave direction in each frequency band, calculated from the second-order components of the wave directional spectrum. Since there is an ambiguity of 180 degrees in the calculation of Alpha2 (i.e. 90 degrees and 270 degrees result in equivalent spectra), the value closer to Alpha1 is selected.

sea_surface_wave_spectral_mean_direction

under discussion
Proposer: Dawn Petraitis
Proposed Date: Sept. 13, 2023
Comments:
Units: degrees (UAAA)
New Term
The wave direction in each frequency band, calculated from the first-order components of the wave directional spectrum.

sea_surface_wave_spectral_mean_direction

under discussion
Proposer: Dawn Petraitis
Proposed Date: Sept. 13, 2023
Comments:
Units: degrees (UAAA)
New Term
The wave direction in each frequency band, calculated from the first-order components of the wave directional spectrum.

mass_concentration_of_iron_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Iron means iron in all chemical forms, commonly referred to as "total iron". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_arsenic_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Arsenic means arsenic in all chemical forms, commonly referred to as "total arsenic". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_nickel_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Nickel means nickel in all chemical forms, commonly referred to as "total nickel". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_aluminium_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Aluminium means aluminium in all chemical forms, commonly referred to as "total aluminium". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_mercury_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Mercury means mercury in all chemical forms, commonly referred to as "total mercury". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_manganese_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Manganese means manganese in all chemical forms, commonly referred to as "total manganese". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_vanadium_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Vanadium means vanadium in all chemical forms, commonly referred to as "total vanadium". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_chromium_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Chromium means chromium in all chemical forms, commonly referred to as "total chromium". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_lithium_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Lithium means lithium in all chemical forms, commonly referred to as "total lithium". "Sea floor sediment" is sediment deposited at the sea bed.

mole_concentration_of_dissolved_inorganic_carbon_in_sea_floor_sediment_pore_water

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: mol m-3 (MLM3)
New Term
"Mole concentration" means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Dissolved inorganic carbon" describes a family of chemical species in solution, including carbon dioxide, carbonic acid and the carbonate and bicarbonate anions. "Dissolved inorganic carbon" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Sea floor sediment" is sediment deposited at the sea bed. "Water" means water in all phases.

mole_concentration_of_dissolved_organic_carbon_in_sea_floor_sediment_pore_water

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: mol m-3 (MLM3)
New Term
"Mole concentration" means number of moles per unit volume, also called "molarity", and is used in the construction "mole_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen' or a phrase such as "nox_expressed_as_nitrogen". "Organic carbon" describes a family of chemical species and is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Sea floor sediment" is sediment deposited at the sea bed. "Water" means water in all phases.

volume_fraction_of_oxygen_in_sea_floor_sediment_pore_water

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units:
New Term
"Volume fraction" is used in the construction "volume_fraction_of_X_in_Y", where X is a material constituent of Y. It is evaluated as the volume of X divided by the volume of Y (including X). It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. "Sea floor sediment" is sediment deposited at the sea bed. "Water" means water in all phases.

mass_concentration_of_cobalt_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Cobalt means cobalt in all chemical forms, commonly referred to as "total cobalt". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_cadmium_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Cadmium means cadmium in all chemical forms, commonly referred to as "total cadmium". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_lead_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Lead means lead in all chemical forms, commonly referred to as "total lead". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_nitrogen_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Total nitrogen means nitrogen in all chemical forms. "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_copper_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Copper means copper in all chemical forms, commonly referred to as "total copper". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_phosphorus_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Phosphorus means phosphorus in all chemical forms, commonly referred to as "total phosphorus". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_organic_carbon_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Organic carbon describes a family of chemical species and is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_phaeopigments_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
Concentration of phaeopigment per unit volume of the water body, where the filtration size or collection method is unspecified (equivalent term in the NERC P01 Parameter Usage Vocabulary may be found at http://vocab.nerc.ac.uk/collection/P01/current/. "Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". Phaeopigments are a group of non-photosynthetic pigments that are the degradation product of algal chlorophyll pigments. Phaeopigments contain phaeophytin, which fluoresces in response to excitation light, and phaeophorbide, which is colorless and does not fluoresce (source: https://academic.oup.com/plankt/article/24/11/1221/1505482). Phaeopigment concentration commonly increases during the development phase of marine phytoplankton blooms, and declines in the post bloom stage (source: https://www.sciencedirect.com/science/article/pii/0967063793901018). "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_zinc_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Zinc means zinc in all chemical forms, commonly referred to as "total zinc". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_silver_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Silver means silver in all chemical forms, commonly referred to as "total silver". "Sea floor sediment" is sediment deposited at the sea bed.

mass_concentration_of_chlorophyll_a_in_sea_floor_sediment

accepted
Proposer: Luke Marsden
Proposed Date: Feb. 3, 2023
Comments:
Units: kg m-3 (UKMC)
New Term
'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Chlorophyll-a is the most commonly occurring form of natural chlorophyll. The chemical formula of chlorophyll-a is C55H72O5N4Mg. "Sea floor sediment" is sediment deposited at the sea bed.

carbon_mass_transport_in_river_channel

accepted
Proposer: Stefan Hagemann
Proposed Date: June 12, 2023
Comments:
Units: kg s-1 (KGPS)
New Term
The amount of total carbon mass transported in the river channels from land into the ocean. This quantity can be provided at a certain location within the river network and floodplain (over land) or at the river mouth (over ocean) where the river enters the ocean. "River" refers to water in the fluvial system (stream and floodplain).

phosphorus_mass_transport_in_river_channel

accepted
Proposer: Stefan Hagemann
Proposed Date: June 12, 2023
Comments:
Units: kg s-1 (KGPS)
New Term
The amount of total phosphorus mass transported in the river channels from land into the ocean. This quantity can be provided at a certain location within the river network and floodplain (over land) or at the river mouth (over ocean) where the river enters the ocean. "River" refers to water in the fluvial system (stream and floodplain). Phosphorus means phosphorus in all chemical forms, commonly referred to as "total phosphorus".

silicate_mass_transport_in_river_channel

accepted
Proposer: Stefan Hagemann
Proposed Date: June 12, 2023
Comments:
Units: kg s-1 (KGPS)
New Term
The amount of silicate mass transported in the river channels from land into the ocean. This quantity can be provided at a certain location within the river network and floodplain (over land) or at the river mouth (over ocean) where the river enters the ocean. "River" refers to water in the fluvial system (stream and floodplain).

nitrogen_mass_transport_in_river_channel

accepted
Proposer: Stefan Hagemann
Proposed Date: June 12, 2023
Comments:
Units: kg s-1 (KGPS)
New Term
The amount of total nitrogen mass transported in the river channels from land into the ocean. This quantity can be provided at a certain location within the river network and floodplain (over land) or at the river mouth (over ocean) where the river enters the ocean. "River" refers to water in the fluvial system (stream and floodplain).

sea_water_velocity_to_direction_due_to_ekman_drift

under discussion
Proposer: Marcelo Andrioni
Proposed Date: Oct. 13, 2023
Comments:
CF mailing list link: Standard names: Ekman current
Units: degree (UAAA)
New Term
A velocity is a vector quantity. The phrase "to_direction" is used in the construction X_to_direction and indicates the direction towards which the velocity vector of X is headed. The direction is a bearing in the usual geographical sense, measured positive clockwise from due north. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

sea_water_speed_due_to_ekman_drift

under discussion
Proposer: Marcelo Andrioni
Proposed Date: Oct. 13, 2023
Comments:
CF mailing list link: Standard names: Ekman current
Units: m s-1 (UVAA)
New Term
Speed is the magnitude of velocity. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

water_surface_height_above_reference_datum

under discussion
Proposer: Fernando Manzano
Proposed Date: May 30, 2023
Comments:
Units: m (ULAA)
Updated term description
'Water surface height above reference datum' means the height of the upper surface of a body of liquid water, such as sea, lake or river, above an arbitrary reference datum. The altitude of the datum should be provided in a variable with standard name water_surface_reference_datum_altitude. The surface called "surface" means the lower boundary of the atmosphere. Nevertheless, the reference datum could be a geophysical surface, a height with respect to a geophysical surface, or a local benchmark attached to the land. Because the definition of the datum may vary from one place to another, spatial differences in actual tidal_sea_surface_height_above_reference_datum are not generally physically meaningful. However, local differences in this quantity over time are physically meaningful.

mass_fraction_of_frozen_water_in_air

under discussion
Proposer: Bjorn Stevens
Proposed Date: July 30, 2023
Comments:

mole_fraction_of_hcfc132b_in_air

accepted
Proposer: Joe Pitt
Proposed Date: Aug. 25, 2023
Comments:
Units: 1 (UUUU)
New Term
"Mole fraction" is used in the construction "mole_fraction_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for HCFC132b is CH2ClCClF2. The IUPAC name for HCFC132b is 1,2-dichloro-1,1-difluoroethane.

mole_fraction_of_cfc13_in_air

accepted
Proposer: Joe Pitt
Proposed Date: Aug. 25, 2023
Comments:
Units: 1 (UUUU)
New Term
"Mole fraction" is used in the construction "mole_fraction_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for CFC13 is CF3Cl. The IUPAC name for CFC13 is chloro(trifluoro)methane.

mole_fraction_of_hcfc133a_in_air

accepted
Proposer: Joe Pitt
Proposed Date: Aug. 25, 2023
Comments:
Units: 1 (UUUU)
New Term
"Mole fraction" is used in the construction "mole_fraction_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for HCFC133a is CH2ClCF3. The IUPAC name for HCFC133a is 2-chloro-1,1,1-trifluoroethane.

sea_ice_volume_fraction_of_ridged_ice

under discussion
Proposer: Aurore Biardeau
Proposed Date: June 15, 2023
Comments:
Units: 1 (UUUU)
New Term

volume_fraction_of_water_in_soil_at_saturation

accepted
Proposer: Imtiaz Dharssi
Proposed Date: July 10, 2023
Comments:
Units: 1 (UUUU)
New Term
Volume fraction" is used in the construction volume_fraction_of_X_in_Y, where X is a material constituent of Y. It is evaluated as the volume of X divided by the volume of Y (including X). It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The volume_fraction_of_water_in_soil_at_saturation is the volume fraction at which a soil has reached it's maximum water holding capacity.

number_of_days_with_air_temperature_above_threshold

under discussion
Proposer: Klaus Zimmermann
Proposed Date: Sept. 23, 2021
Comments:
Units: 1 (UUUU)
Updated term description
Air temperature is the bulk temperature of the air, not the surface (skin) temperature. A variable whose standard name has the form number_of_days_with_X_below|above_threshold is a count of the number of days on which the condition X_below|above_threshold is satisfied. It must have a climatological time variable, and a cell_methods entry for within days which describes the processing of quantity X before the threshold is applied. A number_of_days is an extensive quantity in time, and the cell_methods entry for over days should be "sum". It must give information about the threshold in one or both of the following two ways. With an explicit threshold in a coordinate variable or scalar coordinate variable with the standard name of X, or with a percentile threshold given in a scalar coordinate variable with the standard name cumulative_probability_of_X.

cumulative_probability_of_air_temperature

new
Proposer: Klaus Zimmermann
Proposed Date: Sept. 22, 2021
Comments:
Units: 1 (UUUU)
New Term
A probability percentile.

mass_concentration_of_elemental_carbon_in_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. Chemically, "elemental carbon" is the carbonaceous fraction of particulate matter that is thermally stable in an inert atmosphere to high temperatures near 4000K and can only be gasified by oxidation starting at temperatures above 340 C. It is assumed to be inert and non-volatile under atmospheric conditions and insoluble in any solvent (Ogren and Charlson, 1983). Elemental carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_absorption_equivalent_black_carbon_of_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. The absorption equivalent black carbon mass concentration is obtained by conversion from the particle light absorption coefficient with a suitable mass absorption cross-section.

mass_concentration_of_carbon_in_pm10_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. Chemically, "carbon" is the total sum of elemental, organic, and inorganic carbon. Inorganic carbon is operationally distributed between, i.e. aliased to, elemental and organic carbon.

mass_concentration_of_carbon_in_pm2p5_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm2p5 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. Chemically, "carbon" is the total sum of elemental, organic, and inorganic carbon. Inorganic carbon is operationally distributed between, i.e. aliased to, elemental and organic carbon.

mass_concentration_of_organic_carbon_in_pm10_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. Chemically, "organic carbon" refers to the carbonaceous fraction of particulate matter contained in any of the vast number of compounds where carbon is chemically combined with hydrogen and other elements like O, S, N, P, Cl, etc. Organic carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_organic_carbon_in_pm2p5_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm2p5 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. Chemically, "organic carbon" refers to the carbonaceous fraction of particulate matter contained in any of the vast number of compounds where carbon is chemically combined with hydrogen and other elements like O, S, N, P, Cl, etc. Organic carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_organic_carbon_in_pm1_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm1 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometer. Chemically, "organic carbon" refers to the carbonaceous fraction of particulate matter contained in any of the vast number of compounds where carbon is chemically combined with hydrogen and other elements like O, S, N, P, Cl, etc. Organic carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. Chemically, "organic carbon" refers to the carbonaceous fraction of particulate matter contained in any of the vast number of compounds where carbon is chemically combined with hydrogen and other elements like O, S, N, P, Cl, etc. Organic carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_elemental_carbon_in_pm10_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. Chemically, "elemental carbon" is the carbonaceous fraction of particulate matter that is thermally stable in an inert atmosphere to high temperatures near 4000K and can only be gasified by oxidation starting at temperatures above 340 C. It is assumed to be inert and non-volatile under atmospheric conditions and insoluble in any solvent (Ogren and Charlson, 1983). Elemental carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_elemental_carbon_in_pm2p5_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm2p5 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. Chemically, "elemental carbon" is the carbonaceous fraction of particulate matter that is thermally stable in an inert atmosphere to high temperatures near 4000K and can only be gasified by oxidation starting at temperatures above 340 C. It is assumed to be inert and non-volatile under atmospheric conditions and insoluble in any solvent (Ogren and Charlson, 1983). Elemental carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_elemental_carbon_in_pm1_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm1 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometer. Chemically, "elemental carbon" is the carbonaceous fraction of particulate matter that is thermally stable in an inert atmosphere to high temperatures near 4000K and can only be gasified by oxidation starting at temperatures above 340 C. It is assumed to be inert and non-volatile under atmospheric conditions and insoluble in any solvent (Ogren and Charlson, 1983). Elemental carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.

mass_concentration_of_carbon_in_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. Chemically, "carbon" is the total sum of elemental, organic, and inorganic carbon. Inorganic carbon is operationally distributed between, i.e. aliased to, elemental and organic carbon.

mass_concentration_of_carbon_in_pm1_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm1 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometer. Chemically, "carbon" is the total sum of elemental, organic, and inorganic carbon. Inorganic carbon is operationally distributed between, i.e. aliased to, elemental and organic carbon.

mass_concentration_of_absorption_equivalent_black_carbon_of_pm1_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm1 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. The absorption equivalent black carbon mass concentration is obtained by conversion from the particle light absorption coefficient with a suitable mass absorption cross-section.

mass_concentration_of_absorption_equivalent_black_carbon_of_pm10_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The absorption equivalent black carbon mass concentration is obtained by conversion from the particle light absorption coefficient with a suitable mass absorption cross-section.

mass_concentration_of_absorption_equivalent_black_carbon_of_pm2p5_dry_aerosol_particles_in_air

under discussion
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm2p5 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. The absorption equivalent black carbon mass concentration is obtained by conversion from the particle light absorption coefficient with a suitable mass absorption cross-section.

mass_concentration_of_prokaryotes_expressed_as_chlorophyll_in_sea_water

under discussion
Proposer: Corinne Derval
Proposed Date: Nov. 13, 2020
Comments:
Units: mg m-3 (UMMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Prokaryotes group refers to those phytoplankters characterized by a prokaryotic cell and represents the main component of picophytoplankton.

mass_concentration_of_dinoflagellates_expressed_as_chlorophyll_in_sea_water

under discussion
Proposer: Corinne Derval
Proposed Date: Nov. 13, 2020
Comments:
Units: mg m-3 (UMMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Dinoflagellates (dinophytes) are mostly unicellular, rarely colonial, biflagellated algae with cell walls firm, or reinforced with polygonal plates. They produce some of the most potent toxins known.

mass_concentration_of_prochlorococcus_expressed_as_chlorophyll_in_sea_water

under discussion
Proposer: Corinne Derval
Proposed Date: Nov. 13, 2020
Comments:
Units: mg m-3 (UMMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Prochlorococcus are marine Prokaryotes with an extremely small cell, containing divinyl chlorophyll a and b as their primary photosynthetic pigments and adapted to the high-light, oligotrophic, warm waters of the tropical and subtropical regions of the world’s oceans.

mass_concentration_of_haptophytes_expressed_as_chlorophyll_in_sea_water

under discussion
Proposer: Corinne Derval
Proposed Date: Nov. 13, 2020
Comments:
Units: mg m-3 (UMMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Haptophytes are mainly unicellular marine algae which play an important role in the DMSP production and in calcifying.

mass_concentration_of_greenalgae_expressed_as_chlorophyll_in_sea_water

under discussion
Proposer: Corinne Derval
Proposed Date: Nov. 13, 2020
Comments:
Units: mg m-3 (UMMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Green Alge are small green unicellular flagellates caractherized by the presence of Chlorophyll b.

mass_concentration_of_cryptophytes_expressed_as_chlorophyll_in_sea_water

under discussion
Proposer: Corinne Derval
Proposed Date: Nov. 13, 2020
Comments:
Units: mg m-3 (UMMC)
New Term
Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Cryptophytes are flaggellated unicellular organisms attributable to nanophytoplanktonic component, very rich in fatty acids and therefore a high quality food source for herbivorous zooplankton.

tidal_sea_surface_height_above_reference_datum

under discussion
Proposer: Fernando Manzano on behalf of the Copernicus Marine In Situ TAC Sea Level Reprocessed product Team
Proposed Date: May 30, 2023
Comments:
"Sea surface height" is a time-varying quantity. "Height_above_X" means the vertical distance above the named surface X, in this case above an arbitrary reference datum. The tidal component of sea surface height describes the predicted variability of the sea surface due to astronomic forcing (chiefly lunar and solar cycles) and shallow water resonance of tidal components; for example as generated based on harmonic analysis, or resulting from the application of harmonic tidal series as boundary conditions to a numerical tidal model. The reference datum could be a geophysical surface, a height with respect to a geophysical surface, or a local benchmark attached to the land. Because the definition of the datum may vary from one place to another, spatial differences in actual tidal_sea_surface_height_above_reference_datum are not generally physically meaningful. However, local differences in this quantity over time are physically meaningful.

mole_concentration_of_prokaryotes_expressed_as_carbon_in_sea_water

under discussion
Proposer: Gunnar Bratbak
Proposed Date: April 4, 2022
Comments:
Units: mol m-3 (MLM3)
New Term
Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Prokaryotes” are all Bacteria and Archaea excluding photosynthetic cyanobacteria such as Synechococcus and Prochlorococcus or other separately named components of the procaryotic population.

mass_concentration_of_prokaryotes_expressed_as_carbon_in_sea_water

under discussion
Proposer: Gunnar Bratbak
Proposed Date: April 4, 2022
Comments:
Units: Kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Prokaryotes” are all Bacteria and Archaea excluding photosynthetic cyanobacteria such as Synechococcus and Prochlorococcus or other separately named components of the procaryotic population.

sea_floor_sediment_age_before_1950

under discussion
Proposer: Katrine Husum
Proposed Date: April 4, 2022
Comments:
Units: s (UTBB)
New Term
"sediment_age" means the length of time elapsed since the sediment was deposited. "before_1950" is a transparent representation of the phrase "before_present" used in the geological and archaeological domains to refer to time elapsed between an event and 1950 AD. "sea_floor_sediment" is sediment deposited at the sea bed.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm10_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dried_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dry_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_ambient_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dried_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Dried_aerosol_particles" means that the aerosol sample has been dried from the ambient state before sizing, but that the dry state (relative humidity less than 40 per cent) has not necessarily been reached. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_dry_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm1_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_pm10_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm1 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

volume_scattering_coefficient_of_radiative_flux_in_air_due_to_ambient_aerosol_particles_at_standard_temperature_and_pressure

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments: Created by bulk upload
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure.

water_evapotranspiration_flux

under discussion
Proposer:
Proposed Date: None
Comments:
CF mailing list link:
Units: kg m-2 s-1 (KSP2)
Updated term description
Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) The process of transpiration is not included. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. In the versions before 56 transpiration was not mentioned and for versions 56 to 71 it was allowed to use water_evaporation_flux as an alias.

atmosphere_mass_content_of_rain

under discussion
Proposer: Yuling Wu
Proposed Date: Aug. 6, 2020
Comments:
CF mailing list link: Standard name: AMSR products
Units: kg m-2 (KMP2)
New Term
"Content" indicates a quantity per unit area. The mass is the total mass of the molecules. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "Rain" means drops of water falling through the atmosphere that have a diameter greater than 0.5 mm.

water_evapotranspiration_amount

under discussion
Proposer: Beate Geyer
Proposed Date: June 18, 2021
Comments:
Units: kg m-2 (KMP2)
New Term
Water means water in all phases. "Evapotranspiration" means all water vapor fluxes into the atmosphere from the surface: liquid evaporation, sublimation, and transpiration. Evaporation is the conversion of liquid or solid into vapor. Transpiration is the process by which water is carried from the roots of plants and evaporates from the stomata. (The conversion of solid alone into vapor is called "sublimation".) "Amount" means mass per unit area. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box.

water_potential_evapotranspiration_amount

under discussion
Proposer: Beate Geyer
Proposed Date: June 18, 2021
Comments:
Units: kg m-2 (KMP2)
New Term
"Water" means water in all phases. "Evapotranspiration" means all water vapor fluxes into the atmosphere from the surface: liquid evaporation, sublimation, and transpiration. Evaporation is the conversion of liquid or solid into vapor. Transpiration is the process by which water is carried from the roots of plants and evaporates from the stomata. (The conversion of solid alone into vapor is called "sublimation".) Potential evapotranspiration is the rate at which evaporation would take place under unaltered ambient conditions (temperature, relative humidity, wind, etc.) if the supply of water were unlimited, on the surface as if from an open water surface and unlimited in the soil. "Amount" means mass per unit area.

downward_heat_flux_at_snow_base_in_snow

under discussion
Proposer: Martin Juckes
Proposed Date: May 13, 2020
Comments:
Units: W m-2 (UFAA)
Term change from Term: downward_heat_flux_at_ground_level_in_snow
ground_level means the land surface (beneath the snow and surface water, if any). "Downward" indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase.

volume_absorption_coefficient_of_radiative_flux_in_air_due_to_pm1_aerosol_particles

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: m-1 (UPRM)
New Term
The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Pm10 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometers.

spectral_slope_of_volume_absorption_coefficient_of_radiative_flux_in_sea_water_due_to_dissolved_organic_matter

under discussion
Proposer: Yannick Kern & Colin Stedmon
Proposed Date: March 17, 2023
Comments:
Units: m-1 (UPRM)
New Term
A measure of the dependency of the volume_absorption_coefficient_of_radiative_flux_in_sea_water_due_to_dissolved_organic_matter on wavelength. The wavelength range it has been calculated over is stated as an radiation_wavelength attribute (e.g. “275-295 nm”).

concentration_of_colored_dissolved_organic_matter_in_sea_water_expressed_as_fluorescence_in_raman_units

under discussion
Proposer: Yannick Kern & Colin Stedmon
Proposed Date: March 17, 2023
Comments:
Units: nm-1
New Term
Also commonly known as Chromophoric Dissolved Organic Matter (CDOM). CDOM plays an important role in the carbon cycling and biogeochemistry of coastal waters. It occurs naturally in aquatic environments primarily as a result of matter released from decaying plant and animal matter, which can enter coastal areas in river run-off containing organic materials leached from soils. Fluorescence intensity is normalised to the integrated Raman scattering peak of pure water from excitation at 350 nm, and therefore reported in Raman Units. The wavelengths that fluorescence is measured at will depend on the sensor used and is stated as an radiation_wavelength attribute (eg. “Ex350nm Em460nm”).

moles_of_nitrous_oxide_per_unit_mass_in_sea_water

new
Proposer: Alison Pamment
Proposed Date: Feb. 8, 2023
Comments: Remove duplicate N2O sentence from description.
Units: mol kg-1 (MLKG)
Updated term description
The construction "moles_of_X_per_unit_mass_in_Y" is also called "molality" of X in Y, where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for nitrous oxide is N2O. The equivalent term in the NERC P01 Parameter Usage Vocabulary may be found at http://vocab.nerc.ac.uk/collection/P01/current/DN2OZZ01/.

river_channel_storage

under discussion
Proposer: Dikra Khedhaouiria
Proposed Date: Oct. 6, 2021
Comments: Github #134 1.
Units: m3 (MCUB)
New Term
The river_channel represents a body of water flowing along a natural channel and storage refers to the amount of water stored in that channel.

mass_concentration_of_phycoerythrin_5_in_sea_water

under discussion
Proposer: Fernando Carvalho Pacheco & Fernando Santiago-Mandujano & Karin Bjorkman & Andrew Barna
Proposed Date: Oct. 19, 2021
Comments: Github #135 8.
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". “Phycoerythrin-5” is the concentration of phycoerythrin in the 10-5 µm fractions per unit volume of the water body.

mass_concentration_of_phycoerythrin_4_in_sea_water

under discussion
Proposer: Fernando Carvalho Pacheco & Fernando Santiago-Mandujano & Karin Bjorkman & Andrew Barna
Proposed Date: Oct. 19, 2021
Comments: Github #135 7.
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". “Phycoerythrin-4” is the concentration of phycoerythrin in the 5-0.4 µm fractions per unit volume of the water body.

mass_concentration_of_phycoerythrin_10_in_sea_water

under discussion
Proposer: Fernando Carvalho Pacheco & Fernando Santiago-Mandujano & Karin Bjorkman & Andrew Barna
Proposed Date: Oct. 19, 2021
Comments: Github #135 9.
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". “Phycoerythrin-10” is the concentration of phycoerythrin >10 µm fractions per unit volume of the water body.

enrichment_of_15N_in_particulate_nitrogen_in_particles_in_sea_water_expressed_as_lowercase_delta_15N_relative_to_atmospheric_nitrogen

under discussion
Proposer: Fernando Carvalho Pacheco & Fernando Santiago-Mandujano & Karin Bjorkman & Andrew Barna
Proposed Date: Oct. 19, 2021
Comments: Github #135 17. Is this the same as term 10? (Term 18 withdrawn as duplicate of term 11).
Isotopic enrichment of 15N, often called d15N or delta 15N (lower case delta), is a measure of the ratio of stable isotopes 15N:14N. Reference: Karl, D. (2018) Sediment trap flux measurements from the Hawaii Ocean Time-Series (HOT) project at station ALOHA. Biological and Chemical Oceanography Data Management Office (BCO-DMO). doi:10.1575/1912/bco-dmo.737393.1.

received_power_of_radio_wave_scattered_by_air

under discussion
Proposer: Ingemar Häggström
Proposed Date: Oct. 1, 2021
Comments:
Units: W (WATT)
New Term
The "instrument" (examples are radar and lidar) is the device used to make the observation. The "scatterers" are what causes the transmitted signal to be returned to the instrument (examples are aerosols, hydrometeors and refractive index irregularities), of whatever kind the instrument detects. A standard name referring to the recieved power of the signal at the instrument.

radio_signal_roundtrip_travel_time_in_air

under discussion
Proposer: Ingemar Häggström
Proposed Date: Oct. 1, 2021
Comments:
Units: s (UTBB/)
New Term
The "instrument" (examples are radar and lidar) is the device used to make the observation. The "scatterers" are what causes the transmitted signal to be returned to the instrument (examples are aerosols, hydrometeors and refractive index irregularities), of whatever kind the instrument detects. A standard name referring to time taken for a signal to propagate from the emitting instrument to a reflecting volume and back again to the instrument.

spectral_width_of_radio_wave_scattered_by_air

under discussion
Proposer: Ingemar Häggström
Proposed Date: Oct. 1, 2021
Comments:
Units: Hz (UTHZ)
New Term
The "instrument" (examples are radar and lidar) is the device used to make the observation. The "scatterers" are what causes the transmitted signal to be returned to the instrument (examples are aerosols, hydrometeors and refractive index irregularities), of whatever kind the instrument detects. A standard name referring to frequency width of the received signal.

number_concentration_of_cloud_condensation_nuclei_in_air

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: m-3 (PCUM)
New Term
The cloud condensation nuclei number concentration is the total number of aerosol particles per unit volume independent of and integrated over particle size that act as condensation nuclei for liquid-phase clouds. A coordinate variable with the standard name of relative_humidity should be specified to indicate that the property refers to a specific supersaturation with respect to liquid water. The ability of a particle to act as a condensation nucleus is determined by its size, chemical composition, and morphology.

number_concentration_of_aerosol_particles_in_air

new
Proposer: Markus Fiebig
Proposed Date: Sept. 22, 2021
Comments:
Units: m-3 (PCUM)
New Term
"Number concentration" means the number of particles or other specified objects per unit volume. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself.

mole_fraction_of_methane_in_dry_air

under discussion
Proposer: Claudio D'Onofrio
Proposed Date: Sept. 6, 2021
Comments: ENVRI-FAIR
"Mole fraction" is used in the construction "mole_fraction_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "in_dry_air" means that the quantity is calculated as the number of particles of X divided by the number of dry air particles, i.e. the effect of water vapor is excluded. The chemical formula for methane is CH4. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species.

mole_fraction_of_carbon_monoxide_in_dry_air

under discussion
Proposer: Claudio D'Onofrio
Proposed Date: Sept. 6, 2021
Comments: ENVRI-FAIR
"Mole fraction" is used in the construction "mole_fraction_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "in_dry_air" means that the quantity is calculated as the total number of particles of X divided by the number of dry air particles, i.e. the effect of water vapor is excluded. The chemical formula of carbon monoxide is CO.

mole_fraction_of_carbon_dioxide_in_dry_air

under discussion
Proposer: Claudio D'Onofrio
Proposed Date: Sept. 6, 2021
Comments: ENVRI-FAIR
"Mole fraction" is used in the construction "mole_fraction_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "in_dry_air" means that the quantity is calculated as the total number of particles of X divided by the number of dry air particles, i.e. the effect of water vapor is excluded. The chemical formula for carbon dioxide is CO2.

mole_fraction_of_nitrous_oxide_in_dry_air

under discussion
Proposer: Claudio D'Onofrio
Proposed Date: Sept. 6, 2021
Comments: ENVRI-FAIR
"Mole fraction" is used in the construction "mole_fraction_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "in_dry_air" means that the quantity is calculated as the number of particles of X divided by the number of dry air particles, i.e. the effect of water vapor is excluded. The chemical formula for nitrous oxide is N2O.

eastward_storm_velocity

under discussion
Proposer: Emily Schlie, Eric Engle, and the CAMPS team
Proposed Date: Dec. 22, 2020
Comments:
CF mailing list link: Standard names: **
Units: m s-1 (UVAA)
New Term
The eastward component of storm motion. “Eastward” indicates a vector component which is positive when directed eastward (negative westward). Storm motion is defined as the average speed of a storm and the direction the storm will move from.

northward_storm_velocity

under discussion
Proposer: Emily Schlie, Eric Engle, and the CAMPS team (NOAA MDL)
Proposed Date: Dec. 22, 2020
Comments:
CF mailing list link: Standard names: **
Units: m s-1 (UVAA)
New Term
The northward component of storm_motion. "Northward" indicates a vector component which is positive when directed northward (negative southward). Storm_motion is defined as the average speed of a storm and the direction the storm will move from.

residuum_of_soil_water_content

under discussion
Proposer: Ronny Petrik and Klaus Keuler and Burkhardt Rockel
Proposed Date: May 20, 2021
Comments:
Units: kg m-2 (KMP2)
New Term
"Water" means water in all phases. "Content" indicates a quantity per unit area. The mass content of water in soil refers to the vertical integral from the surface down to those layer of the soil model which is the lowermost hydrological active layer. For the content between specified levels in the soil, standard names including "content_of_soil_layer" are used. "Residuum" is defined by the difference between the tendency of the soil moisture content over a specific time period (left hand side of soil water equation) and the sum of the sources and sinks of soil water over the same time period (right hand side of equation). A positive value means that the soil becomes falsely wetter in a model and a negative value means the soil becomes falsely dryer. It should be noted, that the residuum has to be calculated excluding climatological layers where the temperature or the soil water content is kept to a climatological value or a value given by another soil layer.

sea_surface_wave_variance_spectral_density_attenuation_coefficient_due_to_icebergs

under discussion
Proposer: Andy Saulter
Proposed Date: Dec. 21, 2020
Comments:
Units: 1 (UUUU)
New Term
The attenuation coefficient is the fractional reduction of sea_surface_wave_variance_spectral_density due to the stated process. Attenuation is the sum of absorption and scattering.

sea_water_temperature_anomaly

new
Proposer:
Proposed Date: None
Comments:
CF mailing list link:
Units: K (UPKA)
Updated term description
The term "anomaly" means difference from climatology. Sea water temperature is the in situ temperature of the sea water. To specify the depth at which the temperature anomaly applies, use a vertical coordinate variable or scalar coordinate variable. To specify the reference (baseline) epoch to which the quantity applies, provide a scalar coordinate variable with standard name reference_epoch.

ratio_of_sea_water_practical_salinity_anomaly_to_relaxation_timescale

new
Proposer:
Proposed Date: None
Comments:
CF mailing list link:
Units: s-1 (PRSC)
Updated term description
The quantity with standard name ratio_of_sea_water_practical_salinity_anomaly_to_relaxation_timescale is a correction term applied to modelled sea water practical salinity. The term is estimated as the deviation of model local sea water practical salinity from an observation-based climatology (e.g. World Ocean Database) weighted by a user-specified relaxation coefficient in s-1 (1/(relaxation timescale)). The phrase "ratio_of_X_to_Y" means X/Y. The term "anomaly" means difference from climatology. Practical Salinity, S_P, is a determination of the salinity of sea water, based on its electrical conductance. The measured conductance, corrected for temperature and pressure, is compared to the conductance of a standard potassium chloride solution, producing a value on the Practical Salinity Scale of 1978 (PSS-78). This name should not be used to describe salinity observations made before 1978, or ones not based on conductance measurements. Conversion of Practical Salinity to other precisely defined salinity measures should use the appropriate formulas specified by TEOS-10. Other standard names for precisely defined salinity quantities are sea_water_absolute_salinity (S_A); sea_water_preformed_salinity (S_*), sea_water_reference_salinity (S_R); sea_water_cox_salinity (S_C), used for salinity observations between 1967 and 1977; and sea_water_knudsen_salinity (S_K), used for salinity observations between 1901 and 1966. Salinity quantities that do not match any of the precise definitions should be given the more general standard name of sea_water_salinity. Reference: www.teos-10.org; Lewis, 1980 doi:10.1109/JOE.1980.1145448. To specify the reference (baseline) epoch to which the quantity applies, provide a scalar coordinate variable with standard name reference_epoch.

surface_roughness_length_due_to_vegetation

under discussion
Proposer: Yuling Wu
Proposed Date: Aug. 6, 2020
Comments:
Units: m (ULAA)
New Term
"Vegetation roughness" in fluid dynamics means the surface roughness caused by vegetation in impeding the flow.

lwe_solid_precipitation_rate

under discussion
Proposer: Yuling Wu
Proposed Date: Aug. 6, 2020
Comments:
Units: m s-1 (UVAA)
New Term
"Frozen Precipitation" in the earth's atmosphere means precipitation of water in frozen phase only. The abbreviation "lwe" means liquid water equivalent.

mass_concentration_of_pm10_methanesulfonic_acid_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for methanesulfonic acid is CH3SO3H.

mass_concentration_of_pm10_sodium_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the sodium cation is Na+.

mass_concentration_of_pm10_bromide_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the bromide anion is Br-.

mass_concentration_of_pm10_oxalate_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the oxalate dianion is C2O4(2-).

mass_concentration_of_pm10_chloride_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for chloride is Cl-.

mass_concentration_of_pm10_ammonium_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for ammonium is NH4.

mass_concentration_of_pm10_sulfate_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the sulfate anion is SO4(2-).

mass_concentration_of_pm10_nitrate_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the nitrate anion is NO3-.

mass_concentration_of_pm10_magnesium_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the magnesium dication is Mg(2+).

mass_concentration_of_pm10_potassium_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the potassium cation is K+.

mass_concentration_of_pm10_calcium_dry_aerosol_particles_in_air

under discussion
Proposer: Jen Thomas and Christian Tatzelt
Proposed Date: June 29, 2020
Comments: Linked to discussion of "dry_aerosol" in https://github.com/cf-convention/discuss/issues/61.
Units: kg m-3 (UKMC)
New Term
"Mass concentration" means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical species or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The chemical formula for the calcium dication is Ca(2+).

lake_floor_depth_below_lake_surface

new
Proposer: Beate Geyer and Burkhardt Rockel
Proposed Date: Aug. 21, 2020
Comments:
CF mailing list link: Standard names: lake variables
Units: m (ULAA)
New Term
The lake_floor_depth_below_lake_surface is the vertical distance between the lake surface and the lake bed as measured at a given point in space.

lake_mixed_layer_thickness

new
Proposer: Beate Geyer and Burkhardt Rockel
Proposed Date: Aug. 21, 2020
Comments:
CF mailing list link: Standard names: lake variables
Units: m (ULAA)
New Term
The lake mixed layer is the upper part of the ocean, regarded as being well-mixed. Various criteria are used to define the mixed layer; this can be specified by using a standard name of lake_mixed_layer_defined_by_X. "Thickness" means the vertical extent of a layer.

lake_water_temperature

new
Proposer: Beate Geyer and Burkhardt Rockel
Proposed Date: Aug. 21, 2020
Comments:
CF mailing list link: Standard names: lake variables
Units: degree (UAAA)
New Term
Lake water temperature is the in situ temperature of the lake water. To specify the depth at which the temperature applies use a vertical coordinate variable or scalar coordinate variable.

surface_shortwave_dust_ambient_aerosol_direct_radiative_effect_assuming_clear_sky

under discussion
Proposer: Martin Juckes
Proposed Date: April 24, 2019
Comments:
Units: W m-2 (UFAA)
Term change from Term: surface_net_downward_shortwave_dust_ambient_aerosol_particles_direct_radiative_effect_assuming_clear_sky
The surface called "surface" means the lower boundary of the atmosphere. The term "shortwave" means shortwave radiation. "X_direct_radiative_effect" refers to the instantaneous radiative impact of X on the Earth's energy balance, excluding secondary effects such as changes in cloud cover which may be caused by X. A positive radiative forcing or radiative effect is equivalent to a downward radiative flux and contributes to a warming of the earth system. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. A phrase "assuming_condition" indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clear sky" means in the absence of clouds.

surface_longwave_dust_ambient_aerosol_direct_radiative_effect

under discussion
Proposer: Martin Juckes
Proposed Date: April 24, 2019
Comments:
Units: W m-2 (UFAA)
Term change from Term: surface_net_downward_longwave_dust_ambient_aerosol_particles_direct_radiative_effect
The surface called "surface" means the lower boundary of the atmosphere. The term "longwave" means longwave radiation. "X_direct_radiative_effect" refers to the instantaneous radiative impact of X on the Earth's energy balance, excluding secondary effects such as changes in cloud cover which may be caused by X. A positive radiative forcing or radiative effect is equivalent to a downward radiative flux and contributes to a warming of the earth system. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment.

surface_shortwave_dust_ambient_aerosol_direct_radiative_effect

under discussion
Proposer: Martin Juckes
Proposed Date: April 24, 2019
Comments:
Units: W m-2 (UFAA)
Term change from Term: surface_net_downward_shortwave_dust_ambient_aerosol_particles_direct_radiative_effect
The surface called "surface" means the lower boundary of the atmosphere. The term "shortwave" means shortwave radiation. "X_direct_radiative_effect" refers to the instantaneous radiative impact of X on the Earth's energy balance, excluding secondary effects such as changes in cloud cover which may be caused by X. A positive radiative forcing or radiative effect is equivalent to a downward radiative flux and contributes to a warming of the earth system. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment.

surface_longwave_dust_ambient_aerosol_direct_radiative_effect_assuming_clear_sky

under discussion
Proposer: Martin Juckes
Proposed Date: April 24, 2019
Comments:
Units: W m-2 (UFAA)
Term change from Term: surface_net_downward_longwave_dust_ambient_aerosol_particles_direct_radiative_effect_assuming_clear_sky
The surface called "surface" means the lower boundary of the atmosphere. The term "longwave" means longwave radiation. "X_direct_radiative_effect" refers to the instantaneous radiative impact of X on the Earth's energy balance, excluding secondary effects such as changes in cloud cover which may be caused by X. A positive radiative forcing or radiative effect is equivalent to a downward radiative flux and contributes to a warming of the earth system. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. A phrase "assuming_condition" indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clear sky" means in the absence of clouds.

toa_longwave_dust_ambient_aerosol_direct_radiative_effect_assuming_clear_sky

under discussion
Proposer: Martin Juckes
Proposed Date: April 24, 2019
Comments:
Units: W m-2 (UFAA)
Term change from Term: toa_longwave_dust_ambient_aerosol_particles_direct_radiative_effect_assuming_clear_sky
The abbreviation "toa" means top of atmosphere. The term "longwave" means longwave radiation. "X_direct_radiative_effect" refers to the instantaneous radiative impact of X on the Earth's energy balance, excluding secondary effects such as changes in cloud cover which may be caused by X. A positive radiative forcing or radiative effect is equivalent to a downward radiative flux and contributes to a warming of the earth system. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. A phrase "assuming_condition" indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clear sky" means in the absence of clouds.

surface_upward_turbulent_heat_flux

under discussion
Proposer: Martin Juckes / Alison Pamment
Proposed Date: July 4, 2018
Comments: Arising from LS3MIP discussion.
Units: W m-2 (UFAA)
Term change from Term: surface_upward_sensible_heat_flux
The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The "turbulent heat flux" is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier "where_type" was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies.

surface_downward_turbulent_heat_flux

under discussion
Proposer: Martin Juckes / Alison Pamment
Proposed Date: July 4, 2018
Comments: Arising from LS3MIP discussion.
Units: W m-2 (UFAA)
Term change from Term: surface_downward_sensible_heat_flux
The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). The "turbulent heat flux" is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.

upward_turbulent_heat_flux_in_air

under discussion
Proposer: Martin Juckes / Alison Pamment
Proposed Date: July 4, 2018
Comments: Arising from LS3MIP discussion.
Units: W m-2 (UFAA)
Term change from Term: upward_sensible_heat_flux_in_air
"Upward" indicates a vector component which is positive when directed upward (negative downward). The "turbulent heat flux" is the exchange of heat caused by the motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.

integral_wrt_time_of_surface_downward_turbulent_heat_flux

under discussion
Proposer: Martin Juckes / Alison Pamment
Proposed Date: July 4, 2018
Comments: Arising from LS3MIP discussion.
Units: W s m-2 (WSMM)
Term change from Term: integral_wrt_time_of_surface_downward_sensible_heat_flux
The phrase "integral_wrt_X_of_Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). The "turbulent heat flux" is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.

isotope_ratio_of_2H_to_1H_in_sea_water_excluding_solutes_and_solids

under discussion
Proposer: Martin Juckes
Proposed Date: April 3, 2018
Comments: CMIP6 - PMIP. 12.
Units: 1 (UUUU)
New Term
The phrase "ratio_of_X_to_Y" means X/Y. The phrase "isotope_ratio" is used in the construction isotope_ratio_of_A_to_B where A and B are both named isotopes. It means the ratio of the number of atoms of A to the number of atoms of B present within a medium. "H" means the element "hydrogen" and "2H" is the stable isotope "hydrogen-2", usually called "deuterium". "1H" is the stable isotope "hydrogen-1". The phrase "in_sea_water_excluding_solutes_and_solids" means that the standard name refers to the composition of the sea water medium itself and does not include material that may be dissolved or suspended in the medium.

atmosphere_mole_content_of_semiheavy_water_vapor

under discussion
Proposer: Maarten Sneep
Proposed Date: Feb. 23, 2018
Comments:
"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. The construction "atmosphere_mole_content_of_X" means the vertically integrated number of moles of X above a unit area. The chemical formula for semi-heavy water is HDO, water with one hydrogen replaced by deuterium.

mass_fraction_of_chloride_dry_aerosol_particles_in_air

under discussion
Proposer: Daniel Neumann
Proposed Date: May 18, 2017
Comments:
Units: 1 (UUUU)
New Term
Mass fraction is used in the construction "mass_fraction_of_X_in_Y", where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for chloride is Cl-.

mass_concentration_of_chloride_dry_aerosol_particles_in_air

under discussion
Proposer: Daniel Neumann
Proposed Date: May 18, 2017
Comments:
Units: kg m-3 (UKMC)
New Term
Mass concentration means mass per unit volume and is used in the construction "mass_concentration_of_X_in_Y", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for chloride is Cl-.

divergence_of_surface_downward_stress

under discussion
Proposer: Bruce Hackett
Proposed Date: Jan. 19, 2016
Comments:
Units: N m-3 (NCUM)
New Term
The surface downward stress is the wind stress on the surface. The quantity with standard name divergence_of_surface_downward_stress is a signed scalar that represents the magnitude of the 2D surface wind downward stress vector field's source (positive) or sink (negative) at a given point. The surface called "surface" means the lower boundary of the atmosphere.

vertical_component_of_curl_of_surface_downward_stress

under discussion
Proposer: Bruce Hackett
Proposed Date: Jan. 19, 2016
Comments:
Units: N m-3 (NCUM)
New Term
The surface downward stress is the wind stress on the surface. The quantity with standard name vertical_component_of_curl_of_surface_downward_stress is a signed scalar that represents the magnitude of the 2D surface wind downward stress vector field's local anti-clock-wise rotation at a given point; clockwise rotation is thus given as negative curl. The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a downward flux of momentum, which accelerates the lower medium along the vector and the upper medium against the vector.