Update for CF Version:18
atmosphere_mass_content_of_sulfate
Unit: kg m-2
Unit ref: KMP2
"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.
tendency_of_atmosphere_mass_content_of_water_vapor
Unit: kg m-2 s-1
Unit ref: KSP2
"tendency_of_X" means derivative of X with respect to time. "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. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.
tendency_of_atmosphere_mass_content_of_water_vapor_due_to_deep_convection
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "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. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.
change_over_time_in_atmosphere_mass_content_of_water_due_to_advection
Unit: kg m-2
Unit ref: KMP2
"change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "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. "Water" means water in all phases. 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.
tendency_of_atmosphere_mass_content_of_water_due_to_advection
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "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. "Water" means water in all phases.
mass_content_of_cloud_condensed_water_in_atmosphere_layer
Unit: kg m-2
Unit ref: KMP2
"condensed_water" means liquid and ice. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.
lwe_thickness_of_atmosphere_mass_content_of_water_vapor
Unit: m
Unit ref: KMP2
GRIB: E137
"lwe" means liquid water equivalent. The construction lwe_thickness_of_X_amount or _content means the vertical extent of a layer of liquid water having the same mass per unit area. "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. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.
tendency_of_mass_content_of_water_vapor_in_atmosphere_layer_due_to_convection
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.
mass_content_of_water_vapor_in_atmosphere_layer
Unit: kg m-2
Unit ref: KMP2
"Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.
surface_snow_and_ice_refreezing_flux
Unit: kg m-2 s-1
Unit ref: KSP2
In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. "Surface snow and ice refreezing flux" means the mass flux of surface meltwater which refreezes within the snow or firn.
depth_below_geoid
Unit: m
Unit ref: http://vocab.ndg.nerc.ac.uk/term/P061/37/ULAA
The geoid is a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. (The volume enclosed between the geoid and the sea floor equals the mean volume of water in the ocean.) In an ocean GCM the geoid is the surface of zero depth, or the rigid lid if the model uses that approximation. "Depth_below_X" means the vertical distance below the named surface X.
tendency_of_mass_content_of_water_vapor_in_atmosphere_layer_due_to_turbulence
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary variable) as well.
thickness_of_liquid_water_cloud
Unit: m
Unit ref: ULAA
"Thickness" means the vertical extent of a layer.
platform_zenith_angle
Unit: degree
Unit ref: UAAA
Standard names for "platform" describe the motion and orientation of the vehicle from which observations are made e.g. aeroplane or ship. Platform zenith angle is the the angle between the line of sight to the platform and the local vertical.
tendency_of_mass_content_of_water_vapor_in_atmosphere_layer_due_to_deep_convection
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.
mass_content_of_water_in_atmosphere_layer
Unit: kg m-2
Unit ref: KMP2
"Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "Water" means water in all phases.
tendency_of_mass_content_of_water_vapor_in_atmosphere_layer_due_to_shallow_convection
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.
tendency_of_mass_content_of_water_vapor_in_atmosphere_layer
Unit: kg m-2 s-1
Unit ref: KSP2
"tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.
surface_frozen_carbon_dioxide_amount
Unit: kg m-2
Unit ref: KMP2
"Amount" means mass per unit area. The surface called "surface" means the lower boundary of the atmosphere. The chemical formula for carbon dioxide is CO2. Frozen carbon dioxide is found on the surface of Mars.
change_over_time_in_sea_water_potential_density
Unit: kg m-3
Unit ref: UKMC
Potential density is the density a parcel of air or sea water would have if moved adiabatically to a reference pressure, by default assumed to be sea level pressure. For sea water potential density, if 1000 kg m-3 is subtracted, the standard name "sea_water_sigma_theta" should be chosen instead. "change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate.
change_over_time_in_sea_water_potential_temperature
Unit: K
Unit ref: UPKA
Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. The phrase "change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate.
sea_water_neutral_density
Unit: kg m-3
Unit ref: UKMC
"Neutral density" is a variable designed so that a surface of constant neutral density everywhere has a local slope that is close to the local slope of the neutral tangent plane. At the sea surface in the equatorial Pacific neutral density is very close to the potential density anomaly. At other locations, this is not the case. For example, along a neutral density surface there is a difference of up to 0.14 kg/m^3 in the potential density anomaly at the outcrops in the Southern and Northern hemispheres. Refer to Jackett & McDougall (1997; Journal of Physical Oceanography, Vol 27, doi: 10.1175/1520-0485(1997)027<0237:ANDVFT>2.0.CO;2) for more information.
change_over_time_in_sea_water_neutral_density
Unit: kg m-3
Unit ref: UKMC
"change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Neutral density" is a variable designed so that a surface of constant neutral density everywhere has a local slope that is close to the local slope of the neutral tangent plane. At the sea surface in the equatorial Pacific neutral density is very close to the potential density anomaly. At other locations, this is not the case. For example, along a neutral density surface there is a difference of up to 0.14 kg/m^3 in the potential density anomaly at the outcrops in the Southern and Northern hemispheres. Refer to Jackett & McDougall (1997; Journal of Physical Oceanography, Vol 27, doi: 10.1175/1520-0485(1997)027<0237:ANDVFT>2.0.CO;2) for more information.
change_over_time_in_sea_water_temperature
Unit: K
Unit ref: UPKA
The phrase "change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate.
atmosphere_optical_thickness_due_to_dust_dry_aerosol
Unit: 1
Unit ref: http://vocab.ndg.nerc.ac.uk/term/P061/37/UUUU
The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-"optical_thickness") on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. 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.
atmosphere_mass_content_of_water
Unit: kg m-2
Unit ref: KMP2
"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. "Water" means water in all phases.
change_over_time_in_sea_water_density
Unit: kg m-3
Unit ref: UKMC
Sea water density is the in-situ density (not the potential density). If 1000 kg m-3 is subtracted, the standard name "sea_water_sigma_t" should be chosen instead. "change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate.
change_over_time_in_sea_water_salinity
Unit: 1e-3
The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. "change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate.
mass_content_of_cloud_ice_in_atmosphere_layer
Unit: kg m-2
Unit ref: KMP2
"Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.
tendency_of_atmosphere_mass_content_of_water_vapor_due_to_turbulence
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "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. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.
tendency_of_atmosphere_mass_content_of_water_vapor_due_to_shallow_convection
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "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. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.
surface_snow_and_ice_melt_flux
Unit: kg m-2 s-1
Unit ref: KSP2
In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. "Surface snow and ice melt flux" means the mass flux of all melting at the surface.
number_of_icebergs_per_unit_area
Unit: m-2
Unit ref: http://vocab.ndg.nerc.ac.uk/term/P061/37/UPMS
tendency_of_atmosphere_mass_content_of_water_vapor_due_to_convection
Unit: kg m-2 s-1
Unit ref: KSP2
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. "tendency_of_X" means derivative of X with respect to time. "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. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.
mass_content_of_cloud_liquid_water_in_atmosphere_layer
Unit: kg m-2
Unit ref: KMP2
"Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well.