ertel_potential_vorticity
completeCreated: March 26, 2020
Proposer: Beate Geyer/Ronny Petrik
Proposed Date: 2020-03-11
Change Date: March 26, 2020, 4:17 p.m.
Term: ertel_potential_vorticity
Unit: K m2 kg-1 s-1
Unit ref: KMSS
AMIP: vorpot
GRIB:
Change Date: March 26, 2020, 4:19 p.m.
Term: ertel_potential_vorticity
Unit: K m2 kg-1 s-1
Unit ref: KMSS
AMIP: vorpot
GRIB:
The Ertels potential vorticity is the scalar product of the atmospheric absolute vorticity vector and the gradient of potential temperature. It is a conserved quantity in the absence of friction and heat sources [AMS Glossary, http://glossary.ametsoc.org/wiki/Ertel_potential_vorticity]. A frequently used simplification of the general Ertel potential vorticity considers the Earth rotation vector to have only a vertical component. Then, only the vertical contribution of the scalar product is calculated.
Change Date: June 22, 2020, 11 a.m.
Term: ertel_potential_vorticity
Unit: K m2 kg-1 s-1
Unit ref: KMSS
AMIP: vorpot
GRIB:
The Ertel potential vorticity is the scalar product of the atmospheric absolute vorticity vector and the gradient of potential temperature. It is a conserved quantity in the absence of friction and heat sources [AMS Glossary, http://glossary.ametsoc.org/wiki/Ertel_potential_vorticity]. A frequently used simplification of the general Ertel potential vorticity considers the Earth rotation vector to have only a vertical component. Then, only the vertical contribution of the scalar product is calculated.