Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 6 10 2006 10.5194/acp-6-2783-2006 http://www.atmos-chem-phys.net/6/2783/2006/ http://www.atmos-chem-phys.net/6/2783/2006/acp-6-2783-2006.html http://www.atmos-chem-phys.net/6/2783/2006/acp-6-2783-2006.pdf 2783 2792 2006-07-10 Chemical ozone loss in the Arctic winter 2002/2003 determined with Match M. Streibel martin.streibel@ozone-sec.ch.cam.ac.uk M. Rex P. von der Gathen R. Lehmann N. R. P. Harris G. O. Braathen E. Reimer H. Deckelmann M. Chipperfield G. Millard M. Allaart S. B. Andersen H. Claude J. Davies H. De Backer H. Dier V. Dorokov H. Fast M. Gerding E. Kyrö Z. Litynska D. Moore E. Moran T. Nagai H. Nakane C. Parrondo P. Skrivankova R. Stübi G. Vaughan P. Viatte V. Yushkov Alfred Wegener Institute for Polar and Marine Research, Research Department Potsdam, P.O. Box 600149, 14401 Potsdam, Germany European Ozone Research Coordinating Unit, University of Cambridge, Cambridge, UK NILU, P.O. Box 100, Kjeller, Norway Met. Institute, FU Berlin, C.-H.-Becker Weg 6-10, 12165 Berlin, Germany University of Leeds, Leeds, LS2 9JT, UK Centre for Atmospheric Science, University of Cambridge, Lensfield Road, Cambridge, UK KNMI, P.O. Box 201, 3730 AE De Bilt, The Netherlands Danish Meteorological Institute, Lyngbyvej 100, 2100 Copenhagen, Denmark DWD, Observatory Hohenpeißenberg, Albin-Schwaiger-Weg 10, 82383 Hohenpeißenberg, Germany Meteorological Service of Canada, 4905 Dufferin Street, Downsview, ON, M3H 5T4, Canada RMI, Ringlaan 3, Brussels, Belgium MOL, 15864 Lindenberg, Germany CAO, Pervomajskaya Street 3, Dolgoprudny, Moscow Region, 141700, Russia IAP, Schlossstrasse 6, 18225 Kühlungsborn, Germany SMO,Tähteläntie 71, Sodankylä, Finland MWM, Centre of Aerology, Zegrzynska Str. 38, 05-119 Legionowo, Poland Met. Office, Fitzroy Road, Exeter, Berknell, Devon, EX1 3PB, UK IMS, Valentia Observatory, Cahirciveen, Co. Kerry, Ireland Meteorological Research Institute, 1-1, Nagamine, Tsukuba, Ibaraki 305-0052, Japan National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan INTA, Torrejon de Argoz, Madrid, Spain Czech Hydrometical Institute, Na Sabatce 17, 14306 Prague, Czech Republic Swiss Meteorological Aerological Station, 1530 Payerne, Switzerland University of Manchester, School of Earth, Atmospheric and Environmental Sciences, Manchester, M60 1QD, UK SMI, Les Invuardes, 1530 Payerne, Switzerland The Match technique was used to determine chemically induced ozone loss inside the stratospheric vortex during the Arctic winter 2002/2003. From end of November 2002, which is the earliest start of a Match campaign ever, until end of March 2003 approximately 800 ozonesondes were launched from 34 stations in the Arctic and mid latitudes. Ozone loss rates were quantified from the beginning of December until mid-March in the vertical region of 400–550 K potential temperature. In accordance with the occurrence of a large area of conditions favourable for the formation of polar stratospheric clouds in December ozone destruction rates varied between 10–15 ppbv/day depending on height. Maximum loss rates around 35 ppbv/day were reached during late January. Afterwards ozone loss rates decreased until mid-March when the final warming of the vortex began. In the period from 2 December 2002 to 16 March 2003 the accumulated ozone loss reduced the partial ozone column of 400–500 K potential temperature by 56±4 DU. This value is in good agreement with that inferred from the empirical relation of ozone loss against the volume of potential polar stratospheric clouds within the northern hemisphere. The sensitivity of the results on recent improvements of the approach has been tested. Becker, G., Müller, R., McKenna, D. 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