VERIFICATION OF SCIAMACHY LEVEL 1 DATA BY AMC-DOAS WATER VAP OUR RETRIEVAL

The Air Mass Corrected Differential Optical Absorption Spectroscopy (AMC-DOAS) approach [1] is an independent method to derive global total water vapour column amounts from nadir measurements in the spectral region around 700 nm. The AMC-DOAS method has been successfully applied to SCIAMACHY and GOME data; it is planned to implement the AMC-DOAS retrieval method into the SCIAMACHY operational processing chain. Water vapour column retrievals based on the AMCDOAS approach have been used to assess the quality of the SCIAMACHY v6.0 Level 1 data product. In this paper we report on the outcome of the following activities: 1. Verification of the SCIAMACHY operational Level 1 v6.0 master set with the corresponding v5.0 data set.