Atmos. Chem. Phys. Discuss., 8, 17581-17629, 2008
www.atmos-chem-phys-discuss.net/8/17581/2008/
doi:10.5194/acpd-8-17581-2008
© Author(s) 2008. This work is distributed
under the Creative Commons Attribution 3.0 License.
Review Status
This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
A global stratospheric bromine monoxide climatology based on the BASCOE chemical transport model
N. Theys1, M. Van Roozendael1, Q. Errera1, F. Hendrick1, F. Daerden1, S. Chabrillat1, M. Dorf2, K. Pfeilsticker2, A. Rozanov3, W. Lotz3, J. P. Burrows3, J.-C. Lambert1, F. Goutail4, H. K. Roscoe5, and M. De Mazière1
1Belgium Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium
2Institute for Environmental Physics, University of Heidelberg, Heidelberg, Germany
3Institute for Environmental Physics, University of Bremen, Bremen, Germany
4Service d'Aéronomie, Verrières-le-Buisson, France
5British Antarctic Survey, Cambridge, UK

Abstract. A new climatology of stratospheric BrO profiles based on dynamical and chemical indicators has been developed, with the aim to apply it to the retrieval of tropospheric BrO columns from space nadir measurements. The suitability of the adopted parameterization is evaluated based on three years of output data from the 3-D chemistry transport model BASCOE. The impact of the atmospheric dynamics on the stratospheric BrO distribution is treated by means of Bry/ozone correlations build from 3-D-CTM model results, while photochemical effects are taken into account using stratospheric NO2 columns as an indicator of the BrO/Bry ratio. The model simulations have been optimized for bromine chemistry and budget, and validated through comparisons using an extensive data set of ground-based, balloon-borne and satellite limb (SCIAMACHY) stratospheric BrO observations.

Citation: Theys, N., Van Roozendael, M., Errera, Q., Hendrick, F., Daerden, F., Chabrillat, S., Dorf, M., Pfeilsticker, K., Rozanov, A., Lotz, W., Burrows, J. P., Lambert, J.-C., Goutail, F., Roscoe, H. K., and De Mazière, M.: A global stratospheric bromine monoxide climatology based on the BASCOE chemical transport model, Atmos. Chem. Phys. Discuss., 8, 17581-17629, doi:10.5194/acpd-8-17581-2008, 2008.
 
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