https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.6 2026-03-19T10:41:57.720Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/de7647c9-b129-4cba-afe4-63fa9998206e SOLAR IRRADIANCE Date=2019-06-21 User Id=sritz Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=SOLAR IRRADIANCE [de7647c9-b129-4cba-afe4-63fa9998206e,85399] - SHORTWAVE DOWNWARD IRRADIANCE [e1af236f-ee88-4b10-8feb-70d9e09f90be,368891] Solar irradiance at the top of the atmosphere on a plane normal to theincident radiation, and at the mean distance of the Earth from the Sun.Solar irradiance is also referred to as the solar constant. In satelliteremote sensing, the solar irradiance is used as an onboard calibrartion ofvisible band sensors. Some climate studies suggest that small variationsin the solar irradiance associated with solar activity over days todecades may have an effect the Earth's climate. 2019-06-21 11:04:49.0