@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . rdf:type skos:Concept ; dce:identifier "SDN:P07::DOBXIY2Y" ; dc:date "2019-10-14 16:47:40.0" ; dc:identifier "SDN:P07::DOBXIY2Y" ; pav:authoredOn "2019-10-14 16:47:40.0" ; pav:hasCurrentVersion ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:sameAs , ; owl:versionInfo "1" ; skos:altLabel "" ; skos:definition "Covariance refers to the sample covariance rather than the population covariance. The quantity with standard name covariance_over_longitude_of_northward_wind_and_air_temperature is the covariance of the deviations of meridional air velocity and air temperature about their respective zonal mean values. The data variable must be accompanied by a vertical coordinate variable or scalar coordinate variable and is calculated on an isosurface of that vertical coordinate. \"Northward\" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name \"upward_air_velocity\"). Air temperature is the bulk temperature of the air, not the surface (skin) temperature."@en ; skos:notation "SDN:P07::DOBXIY2Y" ; skos:note "accepted"@en ; skos:prefLabel "covariance_over_longitude_of_northward_wind_and_air_temperature"@en ; skos:related .