@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: . skos:narrower . skos:exactMatch . skos:narrower . skos:narrower . skos:altLabel "" ; skos:broader , , , , ; skos:definition "The term \"longwave\" means longwave radiation. Upwelling radiation is radiation from below. It does not mean \"net upward\". The sign convention is that \"upwelling\" is positive upwards and \"downwelling\" is positive downwards. When thought of as being incident on a surface, a radiative flux is sometimes called \"irradiance\". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called \"vector irradiance\". In accordance with common usage in geophysical disciplines, \"flux\" implies per unit area, called \"flux density\" in physics."@en ; skos:notation "SDN:P07::CFSN0083" ; skos:note "accepted"@en ; skos:prefLabel "upwelling_longwave_flux_in_air"@en ; skos:related . skos:related . skos:member . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:related .