Abstract
At the European Space Operations Centre (ESOC) the raw image data from the geostationary meteorological satellite METEOSAT are received, preprocessed and operational products are derived. Most products directly or indirectly make use of cloud information retrieved by a multispectral image analysis. The purpose of the paper is to describe the cloud retrieval and the subsequent use of the cloud information in the derivation of other products. In particular we discuss the production of cloud motion winds (CMW) based on an automatic cloud tracking and the estimation of the outgoing longwave radiation (OLR) from a condensed data set which is the direct output of the multispectral analysis. Results are presented for the monthly mean OLR and the longwave cloud radiative forcing for July 1983.
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