Articles | Volume 8, issue 10
https://doi.org/10.5194/amt-8-4429-2015
https://doi.org/10.5194/amt-8-4429-2015
Research article
 | 
21 Oct 2015
Research article |  | 21 Oct 2015

The direct fitting approach for total ozone column retrievals: a sensitivity study on GOME-2/MetOp-A measurements

A. Wassmann, T. Borsdorff, J. M. J. aan de Brugh, O. P. Hasekamp, I. Aben, and J. Landgraf

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Short summary
We present an extensive sensitivity study of retrieved total ozone columns from clear sky Global Ozone Monitoring Experiment 2 (GOME-2) measurements between 325 and 335nm which are corrected for instrument degradation. We address the choice of the scaling ozone profile, the choice of the radiative transfer solver, and the approximation of Earth's sphericity. Finally, we study the effect of instrument degradation on the retrieved total ozone columns for the first 4 years of the mission.