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| Titel |
Vortex-averaged Arctic ozone depletion in the winter 2002/2003 |
| VerfasserIn |
T. Christensen, B. M. Knudsen, M. Streibel, S. B. Andersen, A. Benesova, G. Braathen, H. Claude, J. Davies, H. Backer, H. Dier, V. Dorokhov, M. Gerding, M. Gil, B. Henchoz, H. Kelder, R. Kivi, E. Kyrö, Z. Litynska, D. Moore, G. Peters, P. Skrivankova, R. Stübi, T. Turunen, G. Vaughan, P. Viatte, A. F. Vik, P. Gathen, I. Zaitcev |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 5, no. 1 ; Nr. 5, no. 1 (2005-01-21), S.131-138 |
| Datensatznummer |
250002212
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| Publikation (Nr.) |
 copernicus.org/acp-5-131-2005.pdf |
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| Zusammenfassung |
| A total ozone depletion of 68±7 Dobson units
between 380 and 525K from 10 December 2002 to 10 March 2003 is derived
from ozone sonde data 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±9DU for the collar region (closest to the edge), 52±5DU
for the vortex centre and 68±7DU for the middle region in between
centre and collar.
Our results compare well with other studies: We find good agreement with
ozone loss deduced from SAOZ data, with results inferred from POAM III
observations and with results from tracer-tracer correlations using
HF as the long-lived tracer. We find a higher ozone loss than
that deduced by tracer-tracer correlations using CH4.
We have made a careful comparison with Match results: The results were
recalculated using a common time period, vortex edge definition and
height interval. The two methods generally compare very well, except
at the 475K level which exhibits an unexplained discrepancy. |
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