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Total column amounts of CO, CH 4 , CO 2 and N 2 O retrieved from SCIAMACHY nadir observations in its near-infrared channels have been compared to data from a ground-based quasi-global network of Fourier-transform infrared (FTIR) spectrometers. The SCIAMACHY data considered here have been produced by three different retrieval al-5 gorithms, WFM-DOAS (version(More)
The first results from the retrieval of methane (CH 4), carbon monoxide (CO), and carbon dioxide (CO 2) total columns from the SCIAMACHY instrument are now available. Although the columns retrieved by the operational BIAS product do not yet show physically consistent variations, the first results from in-house scientific algorithms look promising. The(More)
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