Atmos. Chem. Phys. Discuss., 4, 6667-6689, 2004
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Vortex-averaged Arctic ozone depletion in the winter 2002/2003
T. Christensen1, B. M. Knudsen1, M. Streibel2, S. B. Andersen1, A. Benesova3, G. Braathen4, H. Claude5, J. Davies6, H. de Backer7, H. Dier8, V. Dorokhov9, M. Gerding10, M. Gil11, B. Henchoz12, H. Kelder13, R. Kivi14, E. Kyrö14, Z. Litynska15, D. Moore16, G. Peters8, P. Skrivankova3, R. Stübi12, T. Turunen14, G. Vaughan17, P. Viatte12, A. F. Vik4, P. von der Gathen2, and I. Zaitcev9
1Danish Meteorological Institute, Copenhagen, Denmark
2Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany
3Czech Hydrometeorological Institute, Prague, Czech Republic
4Norwegian Institute for Air Research, Kjeller, Norway
5Deutscher Wetterdienst, Hohenpeißenberg, Germany
6Environment Canada, Downsview, Ontario, Canada
7Royal Meteorological Institute, Brussels, Belgium
8Deutscher Wetterdienst, Lindenberg, Germany
9Central Aerological Observatory, Dolgoprudny, Moscow Region, Russia
10Leibniz-Institue of Atmospheric Physics, Kühlungsborn, Germany
11Instituto Nacional de Téchnica Aerospacial, Madrid, Spain
12MeteoSwiss, Payerne, Switzerland
13Royal Netherlands Meteorological Institute, De Bilt, Netherlands
14Finnish Meteorological Institute, Sodankylä, Finland
15IMWM, Centre of Aerology, Legionowo, Poland
16UK Met Office, Exeter, UK
17University of Wales, Aberystwyth, UK

Abstract. A total ozone depletion of 68 Dobson units from 10 December 2002 to 10 March 2003 is derived by the vortex-average method taking into account both diabatic descent of the air masses and transport of air into the vortex. When the vortex is divided into three equal-area regions, the results are 85 DU for the collar region (closest to the edge), 52 DU for the vortex centre and 68 DU for the middle region in between centre and collar.

Citation: Christensen, T., Knudsen, B. M., Streibel, M., Andersen, S. B., Benesova, A., Braathen, G., Claude, H., Davies, J., de Backer, H., Dier, H., Dorokhov, V., Gerding, M., Gil, M., Henchoz, B., Kelder, H., Kivi, R., Kyrö, E., Litynska, Z., Moore, D., Peters, G., Skrivankova, P., Stübi, R., Turunen, T., Vaughan, G., Viatte, P., Vik, A. F., von der Gathen, P., and Zaitcev, I.: Vortex-averaged Arctic ozone depletion in the winter 2002/2003, Atmos. Chem. Phys. Discuss., 4, 6667-6689, doi:10.5194/acpd-4-6667-2004, 2004.
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