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AttributesValues
type
versionInfo
  • 3
sameAs
has broader
preferred label
  • ertel_potential_vorticity (en)
Identifier
  • SDN:P07::CFSN0620
dc:identifier
  • SDN:P07::CFSN0620
Date
  • 2024-05-20 20:39:49.0
definition
  • 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. It is strongly recommended that a variable with this standard name should have the attribute units_metadata="temperature: difference", meaning that it refers to temperature differences and implying that the origin of the temperature scale is irrelevant, because it is essential to know whether a temperature is on-scale or a difference in order to convert the units correctly (cf. https://cfconventions.org/cf-conventions/cf-conventions.html#temperature-units). (en)
notation
  • SDN:P07::CFSN0620
alternative label
owl:deprecated
  • false
note
  • accepted (en)
void:inDataset
has related
http://purl.org/pav/authoredOn
  • 2024-05-20 20:39:49.0
http://purl.org/pav/hasCurrentVersion
http://purl.org/pav/hasVersion
http://purl.org/pav/version
  • 3
is sameAs of
is has member of
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