1. Vortex-averaged Arctic ozone depletion in the winter 2002/2003
- Author
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Jonathan Davies, Hennie Kelder, René Stübi, Michael Gerding, P. Viatte, Signe B. Andersen, A. F. Vik, H. De Backer, P. von der Gathen, Geraint Vaughan, David J. Moore, Esko Kyrö, M. Streibel, I. Zaitcev, B. Henchoz, T. Christensen, Geir O. Braathen, Rigel Kivi, Z. Litynska, A. Benesova, Hans Claude, G. Peters, H. Dier, T. Turunen, Valery Dorokhov, P. Skrivankova, B. M. Knudsen, Manuel Gil, Danish Meteorological Institute (DMI), Department of Bentho-pelagic processes, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Czech Hydrometeorological Institute (CHMI), Norwegian Institute for Air Research (NILU), Deutscher Wetterdienst [Offenbach] (DWD), Environment and Climate Change Canada, Institut Royal Météorologique de Belgique [Bruxelles] (IRM), Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), Leibniz-Institut für Atmosphärenphysik (IAP), Universität Rostock-Leibniz Association, Instituto Nacional de Téchnica Aerospacial, Federal Office of Meteorology and Climatology MeteoSwiss, Royal Netherlands Meteorological Institute (KNMI), Finnish Meteorological Institute (FMI), IMWM, United Kingdom Met Office [Exeter], and University of Wales
- Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Atmospheric Science ,Ozone ,010504 meteorology & atmospheric sciences ,Dobson unit ,Diabatic ,010501 environmental sciences ,Total ozone ,Atmospheric sciences ,01 natural sciences ,Ozone depletion ,lcsh:QC1-999 ,Vortex ,lcsh:Chemistry ,chemistry.chemical_compound ,lcsh:QD1-999 ,chemistry ,Arctic ,13. Climate action ,Climatology ,TRACER ,Environmental science ,lcsh:Physics ,0105 earth and related environmental sciences - Abstract
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 POAMIII 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.
- Published
- 2005