https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 24.0 2026-05-27T11:35:35.756Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/instruments/aa0da1eb-b50b-408b-8541-59b8dea64019 BUV The backscatter ultraviolet instrument (BUV) monitored thespatial distribution of atmospheric ozone by measuring theintensity of the UV radiation backscattered from the earth'satmosphere. To obtain this ozone distribution, the BUV subsystemmeasured direct solar radiation and backscattered UV radiationfrom the daytime sun-illuminated atmosphere.The Instrument consisted of a spectrometer (monochromatic) and aphotometer. The monochromatic measured the intensity of UVradiation backscatter and reflected radiation from the earth'satmosphere in 12 wavelengths (2555 to 3398 A) in which ozoneattenuation occurs. The photometer measured the reflected UVradiation in a single wavelength span in which attenuation byozone does not occur. The BUV had four operating modes.[Summary provided by NASA]