product_of_upward_air_velocity_and_air_temperature

complete
Created: Feb. 5, 2024
Proposer: Jonathan Gregory & Lars Barring
Proposed Date: 2024-01-10
#270
Change Date: Feb. 5, 2024, 4:17 p.m.
Term: product_of_upward_air_velocity_and_air_temperature
Unit: K m s-1
Unit ref: KMTS
AMIP:
GRIB:
The phrase "product_of_X_and_Y" means X*Y. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. A velocity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). Upward air velocity is the vertical component of the 3D air velocity vector.
Change Date: Feb. 5, 2024, 4:24 p.m.
Term: product_of_upward_air_velocity_and_air_temperature
Unit: K m s-1
Unit ref: KMTS
AMIP:
GRIB:
The phrase "product_of_X_and_Y" means X*Y. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. A velocity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). Upward air velocity is the vertical component of the 3D air velocity vector. It is strongly recommended to include a units_metadata attribute.
Change Date: Feb. 9, 2024, 3:28 p.m.
Term: product_of_upward_air_velocity_and_air_temperature
Unit: K m s-1
Unit ref: KMTS
AMIP:
GRIB:
The phrase "product_of_X_and_Y" means X*Y. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. A velocity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). Upward air velocity is the vertical component of the 3D air velocity vector. In order to convert the units correctly, it is essential to know whether a temperature is on-scale or a difference. Therefore this standard strongly recommends that any variable whose units involve a temperature unit should also have a units_metadata attribute to make the distinction. It is strongly recommended to include the attribute units_metadata.
Change Date: Feb. 23, 2024, 4:14 p.m.
Term: product_of_upward_air_velocity_and_air_temperature
Unit: K m s-1
Unit ref: KMTS
AMIP:
GRIB:
The phrase "product_of_X_and_Y" means X*Y. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. A velocity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). Upward air velocity is the vertical component of the 3D air velocity vector. It is strongly recommended that a variable with this standard name should have a units_metadata attribute, with one of the values "on-scale" or "difference", whichever is appropriate for the data, because it is essential to know whether the temperature is on-scale (meaning relative to the origin of the scale indicated by the units) or refers to temperature differences (implying that the origin of the temperature scale is irrevelant), in order to convert the units correctly (cf. https://cfconventions.org/cf-conventions/cf-conventions.html#temperature-units).