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Toward a better quantitative understanding of polar stratospheric ozone loss

Authors

Frieler,  K.
External Organizations;

Rex,  M.
External Organizations;

Salawitch,  R. J.
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Canty,  T.
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/persons/resource/streibel

Streibel,  M.
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Stimpfle,  R. M.
External Organizations;

Pfeilsticker,  K.
External Organizations;

Dorf,  M.
External Organizations;

Weisenstein,  D. K.
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Godin-Beekmann,  S.
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Citation

Frieler, K., Rex, M., Salawitch, R. J., Canty, T., Streibel, M., Stimpfle, R. M., Pfeilsticker, K., Dorf, M., Weisenstein, D. K., Godin-Beekmann, S. (2006): Toward a better quantitative understanding of polar stratospheric ozone loss. - Geophysical Research Letters, 33, 10, L10812.
https://doi.org/10.1029/2005GL025466


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_331294
Abstract
Previous studies have shown that observed large O3 loss rates in cold Arctic Januaries cannot be explained with current understanding of the loss processes, recommended reaction kinetics, and standard assumptions about total stratospheric chlorine and bromine. Studies based on data collected during recent field campaigns suggest faster rates of photolysis and thermal decomposition of ClOOCl and higher stratospheric bromine concentrations than previously assumed. We show that a model accounting for these kinetic changes and higher levels of BrO can largely resolve the January Arctic O3 loss problem and closely reproduces observed Arctic O3 loss while being consistent with observed levels of ClO and ClOOCl. The model also suggests that bromine catalysed O3 loss is more important relative to chlorine catalysed loss than previously thought.