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GOME & SCIAMACHY Absorbing Aerosol Index
Please notice, ENVISAT instruments are currently not sending any data. Check the ESA ENVISAT page for latest news.
The Absorbing Aerosol Index (AAI) is a differential spectral index to identify the presence of elevated UV-absorbing aerosols in the Earth's atmosphere. The aerosol types that are mostly seen in the AAI are desert dust and biomass burning aerosols. The AAI works equally well over land and sea surfaces and also in the presence of clouds. The AAIs provided here are derived from the reflectances measured by GOME and SCIAMACHY at 340 and 380 nm.