Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 6 7 2006 10.5194/acp-6-1905-2006 http://www.atmos-chem-phys.net/6/1905/2006/ http://www.atmos-chem-phys.net/6/1905/2006/acp-6-1905-2006.html http://www.atmos-chem-phys.net/6/1905/2006/acp-6-1905-2006.pdf 1905 1911 2006-06-01 The semianalytical cloud retrieval algorithm for SCIAMACHY I. The validation A. A. Kokhanovsky V. V. Rozanov T. Nauss C. Reudenbach J. S. Daniel H. L. Miller J. P. Burrows Institute of Remote Sensing, University of Bremen, Germany Department of Geography, University of Marburg, Germany Aeronomy Laboratory, NOAA, Boulder, Colorado, USA Cooperative Institute for Research in Environmental Science, University of Colorado, Boulder, Colorado, USA Institute of Physics, 70 Skarina Avenue, Minsk, 220072, Belarus A recently developed cloud retrieval algorithm for the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) is briefly presented and validated using independent and well tested cloud retrieval techniques based on the look-up-table approach for MODeration resolutIon Spectrometer (MODIS) data. The results of the cloud top height retrievals using measurements in the oxygen A-band by an airborne crossed Czerny-Turner spectrograph and the Global Ozone Monitoring Experiment (GOME) instrument are compared with those obtained from airborne dual photography and retrievals using data from Along Track Scanning Radiometer (ATSR-2), respectively.