@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::CFSN0676" ; dc:date "2018-07-03 16:09:23.0" ; dc:identifier "SDN:P07::CFSN0676" ; pav:authoredOn "2018-07-03 16:09:23.0" ; pav:hasCurrentVersion ; pav:hasVersion , ; pav:version "3" ; void:inDataset ; owl:deprecated "false" ; owl:sameAs , ; owl:versionInfo "3" ; skos:altLabel "" ; skos:broader , , , , ; skos:definition "Downwelling radiation is radiation from above. It does not mean \"net downward\". The sign convention is that \"upwelling\" is positive upwards and \"downwelling\" is positive downwards. \"Photosynthetic\" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_wavelength. A photon flux is specified in terms of numbers of photons expressed in moles. In accordance with common usage in geophysical disciplines, \"flux\" implies per unit area, called \"flux density\" in physics."@en ; skos:narrower ; skos:notation "SDN:P07::CFSN0676" ; skos:note "accepted"@en ; skos:prefLabel "downwelling_photosynthetic_photon_flux_in_sea_water"@en ; skos:related .