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BAER
Spectral aerosol optical thickness is retrieved simultaneously with the determination of spectral ground reflectance by the Bremen AErosol Retrieval (Baer). The retrieval of AOT provides for 7 short-wave channels of the MERIS instrument the spectral behaviour of AOT, which is used for the determination of the spectral slope in terms of the Ångström -parameter. Ångström is obtained using AOT, retrieved from the 7 MERIS channels with wavelength 0.665 µm.
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| Satellite: | ENVISAT (ESA) |
| Instrument(s): | MERIS |
| Instrument/algorithm PI: | Günther Rohen, IFE Bremen |
| Contact details: | rohen[at]iup.physik.uni-bremen.de |
| Parameter(s): | spectral AOT, Ångström exponent |
| Aerosol algorithm: | BAER |
| Cloud screening: | ESA L2 MERIS cloud screening |
| Aerosol model: | LACE-98 |
| Retrieval assumptions: | surface reflectance from vegetation cover and model reflectance spectra, AOT from LUT |
| Retrieval limitations: | no TIR channels for cloud screening on MERIS |
| Spatial, temporal coverage: | 2005/2006, Germany / SAMUM campaign (Morocco) |
| Spatial, temporal resolution: | 1km / 1150km swath / 35 days repeat cycle |
| Operations status: | experimental |
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