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Arctic ozone loss in threshold conditions: Match observations in 1997/1998and 1998/1999
Schulz, A; Rex, M; Harris, NRP; Braathern, GO; Reimer, E; Alfier, R; Kilbane-Dawe, I; Eckermann, S; Allaart, M; Alpers, M; Bojkov, B; Cisneros, J; Claude, H; Cuevas, E; Davies, J; De Backer, H; Dier, H; Dorokhov, V; Fast, H; Godin, S; Johnson, B; Kois, B; Kondo, Y; Kosmidis, E; Kyro, E; Litynska, Z; Mikkelsen, IS; Molyneux, MJ; Murphy, G; Nagai, T; Nakane, H; OConnor, F; Parrondo, C; Schmidlin, FJ; Skrivankova, P; Varotsos, C; Vialle, C; Viatte, P; Yushkov, V; Zerefos, C; von der Gathen, P;
Alfred Wegener Inst Polar & Marine Res, D-14401 Potsdam, Germany Alfred Wegener Inst Polar & Marine Res Potsdam Germany D-14401 , Germany European Ozone Res Coordinating Unit, Cambridge CB2 1EW, England European Ozone Res Coordinating Unit Cambridge England CB2 1EW , England Norwegian Inst Air Res, Kjeller, Norway Norwegian Inst Air Res Kjeller Norway ian Inst Air Res, Kjeller, Norway FU Berlin, Inst Meteorol, D-12165 Berlin, Germany FU Berlin Berlin Germany D-12165 Inst Meteorol, D-12165 Berlin, Germany USN, Res Lab, Washington, DC 20375 USA USN Washington DC USA 20375USN, Res Lab, Washington, DC 20375 USA Royal Netherlands Meteorol Inst, NL-3730 AE De Bilt, Netherlands Royal Netherlands Meteorol Inst De Bilt Netherlands NL-3730 AE therlands Leibniz Inst Atmospher Phys, D-18221 Kuhlungsborn, Germany Leibniz Inst Atmospher Phys Kuhlungsborn Germany D-18221 gsborn, Germany Inst Nacl Meteorol, Madrid 28071, Spain Inst Nacl Meteorol Madrid Spain 28071 Nacl Meteorol, Madrid 28071, Spain Deutsch Wetterdienst, Observ Hohenpeissenberg, D-82383 Hohenpeissenberg, Germany Deutsch Wetterdienst Hohenpeissenberg Germany D-82383 issenberg, Germany Inst Nacl Meteorol, Tenerife, Spain Inst Nacl Meteorol Tenerife SpainInst Nacl Meteorol, Tenerife, Spain Atmospher Environm Serv, Downsview, ON M3H 5T4, Canada Atmospher Environm Serv Downsview ON Canada M3H 5T4 w, ON M3H 5T4, Canada Royal Meteorol Inst, B-1180 Brussels, Belgium Royal Meteorol Inst Brussels Belgium B-1180 st, B-1180 Brussels, Belgium Meteorol Observ Lindenberg, D-15864 Lindenberg, Germany Meteorol Observ Lindenberg Lindenberg Germany D-15864 indenberg, Germany Cent Aerol Observ, Dolgoprudnyi 141700, Moscow Region, Russia Cent Aerol Observ Dolgoprudnyi Moscow Region Russia 141700 Region, Russia Univ Paris 06, Serv Aeron, CNRS, F-75230 Paris 05, France Univ Paris 06 Paris France 05 Serv Aeron, CNRS, F-75230 Paris 05, France NOAA, Climate Monitoring & Diagnost Lab, Ozone & Water Vapour Grp, Boulder, CO 80303 USA NOAA Boulder CO USA 80303 Ozone & Water Vapour Grp, Boulder, CO 80303 USA Ctr Aerol, Inst Meteorol & Water Management, PL-95119 Legionowo, Poland Ctr Aerol Legionowo Poland PL-95119 nagement, PL-95119 Legionowo, Poland Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan Univ Tokyo Tokyo Japan 1538904 Res Ctr, Meguro Ku, Tokyo 1538904, Japan Univ Thessaloniki, Lab Atmospher Phys, Salonika 45006, Greece Univ Thessaloniki Salonika Greece 45006 her Phys, Salonika 45006, Greece Sodankyla Meteorol Observ, Sodankyla 99600, Finland Sodankyla Meteorol Observ Sodankyla Finland 99600 dankyla 99600, Finland Danish Meteorol Inst, DK-2100 Copenhagen, Denmark Danish Meteorol Inst Copenhagen Denmark DK-2100 2100 Copenhagen, Denmark Meteorol Off, Wokingham RG40 3DN, Berks, England Meteorol Off Wokingham Berks England RG40 3DN am RG40 3DN, Berks, England Irish Meteorol Serv, Valentia Observ, Cahirciveen, County Kerry, Ireland Irish Meteorol Serv Cahirciveen County Kerry Ireland unty Kerry, Ireland Meteorol Res Inst, Tsukuba, Ibaraki 3050052, Japan Meteorol Res Inst Tsukuba Ibaraki Japan 3050052 a, Ibaraki 3050052, Japan Natl Inst Environm Studies, Tsukuba, Ibaraki 3050053, Japan Natl Inst Environm Studies Tsukuba Ibaraki Japan 3050053 i 3050053, Japan Inst Nacl Tecn Aerosp, Madrid 28850, Spain Inst Nacl Tecn Aerosp Madrid Spain 28850 ecn Aerosp, Madrid 28850, Spain NASA, Goddard Space Flight Ctr, Wallops Flight Facil, Wallops Island, VA 23337 USA NASA Wallops Island VA USA 23337 ight Facil, Wallops Island, VA 23337 USA Czech Hydrometeorol Inst, Uppsala Air & Surface Observat Dept, Prague 14306, Czech Republic Czech Hydrometeorol Inst Prague Czech Republic 14306 306, Czech Republic Univ Athens, Dept Appl Phys, Athens 15784, Greece Univ Athens Athens Greece 15784 ns, Dept Appl Phys, Athens 15784, Greece Inst Pierre Simon Laplace, Serv Observat, F-91371 Verrieres Buisson, France Inst Pierre Simon Laplace Verrieres Buisson France F-91371 isson, France Swiss Meteorol Inst, CH-1530 Payerne, Switzerland Swiss Meteorol Inst Payerne Switzerland CH-1530 530 Payerne, Switzerland
Titolo Testata:
fascicolo: D7, volume: 106, anno: 2001,
pagine: 7495 - 7503
Tipo documento:
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Indirizzi per estratti:
Indirizzo: Schulz, A Alfred Wegener Inst Polar & Marine Res, POB 600149, D-14401 Potsdam, Germany Alfred Wegener Inst Polar & Marine Res POB 600149 Potsdam Germany D-14401
A. Schulz et al., "Arctic ozone loss in threshold conditions: Match observations in 1997/1998and 1998/1999", J GEO RES-A, 106(D7), 2001, pp. 7495-7503


Chemical ozone loss rates inside the Arctic polar vortex were determined in early 1998 and early 1999 by using the Match technique based on coordinated ozonesonde measurements. These two winters provide the only opportunities in recent years to investigate chemical ozone loss in a warm Arctic vortex under threshold conditions, i.e., where the preconditions for chlorine activation, and hence ozone destruction, only occurred occasionally. In 1998,results were obtained in January and February between 410 and 520 K. The overall ozone loss was observed to be largely insignificant; with the exception of late February, when those air parcels exposed to temperatures below 195 K were affected by chemical ozone loss. In 1999, results are confined to the 475 K isentropic level, where no significant ozone loss was observed. Average temperatures were some 8 degrees - 10 degrees higher than those in1995, 1996, and 1997, when substantial chemical ozone loss occurred. The results underline the strong dependence of the chemical ozone loss on the stratospheric temperatures. This study shows that enhanced chlorine alone does not provide a sufficient condition for ozone loss. The evolution of stratospheric temperatures over the next decade will be the determining factor for the amount of wintertime chemical ozone loss in the Arctic stratosphere.

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Documento generato il 08/04/20 alle ore 09:05:39