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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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Atmos. Meas. Tech., 4, 1319-1359, 2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
04 Jul 2011
BrO vertical distributions from SCIAMACHY limb measurements: comparison of algorithms and retrieval results
A. Rozanov1, S. Kühl2, A. Doicu4, C. McLinden8, J. Puķīte2, H. Bovensmann1, J. P. Burrows1, T. Deutschmann3, M. Dorf3, F. Goutail5, K. Grunow9,*, F. Hendrick6, M. von Hobe7, S. Hrechanyy4,7, G. Lichtenberg4, K. Pfeilsticker3, J. P. Pommereau5, M. Van Roozendael6, F. Stroh7, and T. Wagner2,3 1Institute of Environmental Physics (IUP), University of Bremen, Bremen, Germany
2Max Planck Institute for Chemistry, Mainz, Germany
3Institute of Environmental Physics, University of Heidelberg, Heidelberg, Germany
4German Aerospace Center (DLR) Oberpfaffenhofen, Oberpfaffenhofen, Germany
5LATMOS, CNRS, UVSQ, Guyancourt, France
6Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium
7Jülich Research Center, Jülich, Germany
8Environment Canada, Toronto, Canada
9Meteorological Institute, Free University of Berlin, Berlin, Germany
*now at: Senatsverwaltung für Gesundheit, Umwelt und Verbraucherschutz, Berlin, Germany
Abstract. This study presents two scientific and one operational retrieval algorithms used to obtain vertical distributions of bromine monoxide (BrO) from observations of the scattered solar light performed by the SCIAMACHY instrument in limb viewing geometry. The study begins with a discussion of the theoretical basis of all algorithms followed by an investigation of the retrieval sensitivity. Simulations with three different radiative transfer models allow us to analyze influence of the forward model implementation upon the retrieval results. By means of synthetic retrievals we analyze major sources of uncertainties in the resulting BrO profiles such as different BrO cross sections, their temperature dependence, and stratospheric aerosols. Finally, the reliability of SCIAMACHY BrO profile retrievals is demonstrated comparing results from different algorithms to each other and to balloon-borne observations.

Citation: Rozanov, A., Kühl, S., Doicu, A., McLinden, C., Puķīte, J., Bovensmann, H., Burrows, J. P., Deutschmann, T., Dorf, M., Goutail, F., Grunow, K., Hendrick, F., von Hobe, M., Hrechanyy, S., Lichtenberg, G., Pfeilsticker, K., Pommereau, J. P., Van Roozendael, M., Stroh, F., and Wagner, T.: BrO vertical distributions from SCIAMACHY limb measurements: comparison of algorithms and retrieval results, Atmos. Meas. Tech., 4, 1319-1359,, 2011.
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