air_pseudo_equivalent_temperature

accepted
Created: Feb. 5, 2024
Proposer: Beate Geyer/Ronny Petrik
Proposed Date: 2020-02-11
#270
Change Date: Feb. 5, 2024, 2:32 p.m.
Term: air_pseudo_equivalent_temperature
Unit: K
Unit ref: UPKA
AMIP:
GRIB:
The pseudoequivalent temperature is also known as the adiabatic equivalent temperature. It is the temperature that an air parcel would have after undergoing the following process: dry-adiabatic expansion until saturated; pseudoadiabatic expansion until all moisture is precipitated out; dry-adiabatic compression to the initial pressure. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Equivalent_temperature. This quantity is distinct from the isobaric equivalent temperature, also known as equivalent temperature, which has the standard name air_equivalent_temperature.
Change Date: Feb. 5, 2024, 2:52 p.m.
Term: air_pseudo_equivalent_temperature
Unit: K
Unit ref: UPKA
AMIP:
GRIB:
The pseudoequivalent temperature is also known as the adiabatic equivalent temperature. It is the temperature that an air parcel would have after undergoing the following process: dry-adiabatic expansion until saturated; pseudoadiabatic expansion until all moisture is precipitated out; dry-adiabatic compression to the initial pressure. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Equivalent_temperature. This quantity is distinct from the isobaric equivalent temperature, also known as equivalent temperature, which has the standard name air_equivalent_temperature. It is strongly recommended to include a units_metadata attribute.
Change Date: Feb. 9, 2024, 2:42 p.m.
Term: air_pseudo_equivalent_temperature
Unit: K
Unit ref: UPKA
AMIP:
GRIB:
The pseudoequivalent temperature is also known as the adiabatic equivalent temperature. It is the temperature that an air parcel would have after undergoing the following process: dry-adiabatic expansion until saturated; pseudoadiabatic expansion until all moisture is precipitated out; dry-adiabatic compression to the initial pressure. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Equivalent_temperature. This quantity is distinct from the isobaric equivalent temperature, also known as equivalent temperature, which has the standard name air_equivalent_temperature. 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, 3:53 p.m.
Term: air_pseudo_equivalent_temperature
Unit: K
Unit ref: UPKA
AMIP:
GRIB:
The pseudoequivalent temperature is also known as the adiabatic equivalent temperature. It is the temperature that an air parcel would have after undergoing the following process: dry-adiabatic expansion until saturated; pseudoadiabatic expansion until all moisture is precipitated out; dry-adiabatic compression to the initial pressure. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Equivalent_temperature. This quantity is distinct from the isobaric equivalent temperature, also known as equivalent temperature, which has the standard name air_equivalent_temperature. 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).