https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/68323795-3614-462f-8259-bd5293620799 LONGWAVE RADIATION Date=2021-03-04 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Longwave radiation is radiation with wavelengths longer than 4 micros. Also referred to as infrared radiation or terrestrial radiation. New Value=Longwave radiation is radiation with wavelengths longer than 4 micros. Also referred to as infrared radiation or terrestrial radiation. Date=2021-03-04 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference System Note=update Definition Old Value=WMO. 1966. International Meteorological Vocabulary. WMO/OMM/BMO, No. 182. TP. 91., Switzerland. New Value=WMO. 1966. International Meteorological Vocabulary. WMO/OMM/BMO, No. 182. TP. 91., Switzerland. Date=2021-05-12 User Id=sritz Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=LONGWAVE RADIATION [68323795-3614-462f-8259-bd5293620799,604543] - DOWNWELLING LONGWAVE RADIATION [bd6270d3-dd4d-41ed-a6c2-58abe926017c,606937] Date=2021-02-26 User Id=tstevens Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=LONGWAVE RADIATION [68323795-3614-462f-8259-bd5293620799,85383] - UPWELLING LONGWAVE RADIATION [82f5ea3b-63f3-47a8-ad41-24cd5914afd1,560872] Longwave radiation is radiation with wavelengths longer than 4 micros. Also referred to as infrared radiation or terrestrial radiation. 2021-05-12 15:53:58.0