GlobAerosol
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GlobAerosol is an ESA DUE project with the aim of a global aerosol data set from merging ATSR-2, AATSR, MERIS and SEVIRI satellite data. The products produced are aerosol optical depths at 0.55 and 0.87µm and Angström coefficient and estimated speciation. The data sets are disseminated to support the information needs of users in climate and meteorological research, trans-boundary pollution and air quality agencies.
| Satellite | ERS-2 (ESA), ENVISAT (ESA), MSG (EUMETSAT) |
| Instrument(s) | ATSR-2, AATSR, MERIS, SEVIRI |
| Algorithm PI | Gareth Thomas (RAL) |
| Contact Details | gareth.thomas[at]stfc.ac.uk |
| Parameter(s) | AOD at 0.55 and 0.87µm, Angstrom exponent, limited type speciation. ATSR-2 and AATSR also provide retrieved 550 nm surface reflectance |
| Aerosol algorithm | ORAC dual-view (ATSR-2/AATSR) ORAC single-view (SEVIRI) ESA atmospheric correction retrieval (MERIS) |
| Cloud screening |
ESA Cloud Flag (Ocean) / Stevens Cloud Flag (Land) / EUMETSAT CLM (SEVIRI) |
| Aerosol model | OPAC, AERONET biomass burnin |
| Retrieval assumptions | MODIS BRDF used as a priori land surface reflectance |
| Retrieval limitations | MERIS retrieval fails at high AOD No/low quality retrievals over bright surfaces |
| Spatial, temporal coverage | 1995-2008, global |
| Spatial, temporal resolution | 10km - 1 degree x 1 degree / daily |
| Operations status | reprocessing |
| Validation status | intercomparison with ground-based, airborne and other satellite data |
| Quality control | error handling by Optimal Estimation scheme and statistical analysis for merged products |
| last algorithm version | v3.2 (11/2009) |
| last validation | 11/2009 |
| Algorithm description | Product format description |
| Version explanation | Validation summary |
| Publications |
| Product data access |
| Image / quicklook data access |