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Weighting function DOAS total ozone from GOME and SCIAMACHY during the last decade

Mark Weber(1), Lok Lamsal(1), Melanie Coldewey-Egbers(1), Sandip Dhomse(1), Astrid Bracher(1) and John Burrows(1)

(1) University of Bremen FB1, PO Box 330 440, D-28334 Bremen, Germany


Total ozone from GOME and SCIAMACHY using the weighting function DOAS (WFDOAS) approach from the last decade are presented. The GOME WFDOAS total ozone shows excellent agreement with Brewer and Dobson spectrometer results that are primary standards for ground observations. The WFDOAS algorithm has been successfully adapted to SCIAMACHY. Due to small differences in spectral resolution between GOME and SCIAMACHY and also between associated reference data, such as cross-sections measured with the flight models, careful adjustements in order to homogenize the combined GOME and SCIAMACHY data record are required. In this paper we describe the WFDOAS algorithm, long-term validation of GOME data, and the adaptation to SCIAMACHY. A few scientific highlights from GOME and SCIAMACHY such as the dramatic split ozone hole event above Antarctica are presented. In addition the question if ozone has recovered after the ban of man-made CFCs following the Montreal protocol and its amendments is adressed.


Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry