https://gerb.oma.be/ 2026-05-12T14:45:14+00:00 https://gerb.oma.be/ https://gerb.oma.be/lib/exe/fetch.php?media=wiki:logo.png text/html 2024-05-28T13:58:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://gerb.oma.be/doku.php?id=aerosols:aerosols_land&rev=1716904715&do=diff Land Meteosat-8 images 8 March 2006 12:00 UTC, dust outbreak over the Sahara. The desert surface is characterized by very low emissivity at IR8.7μm, we can see it appear darker on the image: [8.7μm brightness temperature] If we make the difference between 8.7μm and 10.8μm we are able to separate the clear-sky regions from the regions with aerosols: text/html 2024-05-28T13:58:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://gerb.oma.be/doku.php?id=aerosols:aerosols_ocean&rev=1716904715&do=diff Ocean Meteosat-8 images Aerosol Optical Depth 3 March 2004 11:00 UTC. Three values of Aerosol Optical Depth (AOD) are retrieved over cloud- and glint-free ocean in three SEVIRI shortwave spectral bands, independently using the 3rd generation NOAA/NESDISD aerosol algorithm for AVHRR/3 (Ignatov et al. 2002) text/html 2024-05-28T13:58:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://gerb.oma.be/doku.php?id=aerosols:team&rev=1716904715&do=diff Remote sensing of troposheric aerosols from SEVIRI data Introduction At RMIB, we study the direct radiative effect of aerosols on climate. We mainly use 2 instruments onboard MSG satellites: SEVIRI and GERB. SEVIRI is the main radiometer that measures the reflected solar radiation and the emitted infrared radiation in 12 spectral bands.