Aerosol retrievals from METEOSAT-8 - CM SAF

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SAF on Climate Monitoring Visiting Scientists Report Doc. No: 1.0 Issue : 1.0 Date : 4 October 2006 05:00 UTC 06:00 UTC 07:00 UTC 08:00 UTC 09:00 UTC 10:00 UTC 11:00 UTC 12:00 UTC - 26 -
SAF on Climate Monitoring Visiting Scientists Report Doc. No: 1.0 Issue : 1.0 Date : 4 October 2006 13:00 UTC 14:00 UTC 15:00 UTC 16:00 UTC 17:00 UTC 18:00 UTC Figure 11: Aerosol optical thickness at 670nm over Europe from 05:00 UTC till 18:00 UTC the 14 th July 2005 in the SEVIRI channel 1. The color scale is from 0.00 (dark blue) till 0.40 (red). 6.1.5 Results and Comparison with AERONET and MODIS The AOT retrievals over the period 1 – 14 July 2005 were compared for several days to AERONET measurements at Toulouse (France), Ispra (Italy), Blida (Algeria) and El Arenosillo (Spain). AOT's from MSG have been averaged within a 5x5 pixels area around the AERONET stations. In general, the AERONET and MSG retrieved AOT values for cloud-free areas correlate reasonably well and are in the same order of magnitude. However, MSG tends to under-estimate AOT, which is probably due to an overestimation of the surface reflectance. The latter could be caused by residual aerosol loadings in the surface reflectance values that are not corrected for in the current retrieval scheme. - 27 -
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Aerosol retrievals from METEOSAT-8 - CM SAF

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