MSG (Alpine )
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AOD is estimated from MSG SEVIRI with a one-channel multi-temporal approach with special focus on the European Alps and a temporal resolution of 15 minutes. Surface reflectance is estimated from a time series prior to the observations. Additionally, the area where aerosol optical depth can be derived is not limited to certain land cover types. Only bright surface targets (e.g. snow) are excluded in the retrieval.
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Example result / latest result (if near-real time)
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| Satellite: | MSG (EUMETSAT) |
| Instrument(s): | SEVIRI |
| Instrument/algorithm PI: | Christoph Popp, University of Bern |
| Contact details: | swun[at]giub.unibe.ch , christoph.popp[at]empa.ch |
| Parameter(s): | AOD |
| Aerosol algorithm: | Alpine AOD |
| Cloud screening: | SAFNWC Cloud Mask, cloud shadow masking, spatial filtering for residual cloud effects |
| Aerosol model: | continental (6S, single type) |
| Retrieval assumptions: | invariant surface reflectance during previous 21 days; very bright surfaces are rejected; correction for water vapour, ozone, Rayleigh optical depth |
| Retrieval limitations: | increasing difference between estimated and modelled surface with increasing surface reflectance |
| Spatial, temporal coverage: | Alpine Europe, 6:30-17:30 UTC (depending on SZA) |
| Spatial, temporal resolution: | 3x3km² / geostationary / 15 minutes repeat cycle |
| Operations status: | (pre-)operational |
| Validation status: | intercomparison with ground-based observations |
| Quality control: | manual / offline AERONET validation |
| last algorithm version: | MSG SEVIRI AOD LAND/CENTRAL EUROPE (11/2009) |
| last validation: | 08/2004, 11/2007-11/2008 |
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Algorithm description
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Product format description
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Version explanation
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Validation summary
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Publications
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Product data access
Image / quicklook data access |