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  • Projekt EU CANDIDOZ zkoumal chemické a dynamické vlivy na dlouhodobé trendy ozónu na severní polokouli. Celková syntéza jednotlivých analýz v CANDIDOZ jasně ukazuje na jeden společný rys středních šířek severní polokoule a Arktidy: téměř monotonní záporný trend od konce 70-tých let do poloviny 90-tých let, následovaný obdobím kladného trendu. Ekvivalentní efektivní stratosférický chlór, který díky Montrealskému protokolu dosáhl maxima v r. 1997, popisuje ztráty ozónu lépe než jednoduchý lineární trend. Analýzy dále ukázaly, že změny dynamických parametrech jako je reziduální cirkulace hrají klíčovou roli v otočení trendu ozónu okolo r. 1995. Synoptické procesy reprezentované ekvivalentní šířkou nebo výškou konvenční tropopauzy nebo 250 hPa geopotenciální výškou hrají roli v růstu ozónu v nejnižší stratosféře v poledních letech. (cs)
  • The EU CANDIDOZ project investigated the chemical and dynamical influences on decadal ozone trends focusing on the northern hemisphere (NH). The overall synthesis of the individual analyses in CANDIDOZ shows clearly one common feature in the NH mid latitudes and in the Arctic: an almost monotonic negative trend from the late 1970s to the mid 1990s followed by an increase. The Equivalent Effective Stratospheric Chlorine (EESC) which peaked in 1997 as a consequence of the Montreal Protocol was observed to describe ozone loss better than a simple linear trend. Furthermore, analyses point to changes in dynamical drivers, such as the residual circulation playing a key role in the observed turnaround. Synoptic scale processes as represented by the new equivalent latitude proxy, by conventional tropopause altitude or by 250 hPa geopotential height have also been successfully linked to the recent ozone increases in the lowermost stratosphere.
  • The EU CANDIDOZ project investigated the chemical and dynamical influences on decadal ozone trends focusing on the northern hemisphere (NH). The overall synthesis of the individual analyses in CANDIDOZ shows clearly one common feature in the NH mid latitudes and in the Arctic: an almost monotonic negative trend from the late 1970s to the mid 1990s followed by an increase. The Equivalent Effective Stratospheric Chlorine (EESC) which peaked in 1997 as a consequence of the Montreal Protocol was observed to describe ozone loss better than a simple linear trend. Furthermore, analyses point to changes in dynamical drivers, such as the residual circulation playing a key role in the observed turnaround. Synoptic scale processes as represented by the new equivalent latitude proxy, by conventional tropopause altitude or by 250 hPa geopotential height have also been successfully linked to the recent ozone increases in the lowermost stratosphere. (en)
Title
  • Ozone trends at northern mid- and high latitudes – a European perspective
  • Trendy ozónu v severních vysokých a středních šířkách - evropská perspektiva (cs)
  • Ozone trends at northern mid- and high latitudes – a European perspective (en)
skos:prefLabel
  • Ozone trends at northern mid- and high latitudes – a European perspective
  • Trendy ozónu v severních vysokých a středních šířkách - evropská perspektiva (cs)
  • Ozone trends at northern mid- and high latitudes – a European perspective (en)
skos:notation
  • RIV/68378289:_____/08:00314061!RIV09-AV0-68378289
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(AV0Z30420517)
http://linked.open...iv/cisloPeriodika
  • 5
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 385738
http://linked.open...ai/riv/idVysledku
  • RIV/68378289:_____/08:00314061
http://linked.open...riv/jazykVysledku
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  • middle atmosphere – composition; chemistry; dynamics (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [78D4E73E9CB0]
http://linked.open...i/riv/nazevZdroje
  • Annales Geophysicae
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 26
http://linked.open...iv/tvurceVysledku
  • Hansen, G.
  • Križan, Peter
  • Laštovička, Jan
  • Weber, M.
  • Kivi, R.
  • Zerefos, C.
  • Andersen, S.-B.
  • Brunner, D.
  • Dhomse, S.
  • Godin-Beekmann, S.
  • Hadjinicolaou, P.
  • Harris, N. R. P.
  • Isaksen, I.
  • Jrrar, A.
  • Karpetchko, A.
  • Knudsen, B.
  • Kyrö, E.
  • Maeder, J.
  • Orsolini, Y.
  • Pyle, J. A.
  • Rex, M.
  • Staehelin, J.
  • Vaníček, K.
  • Wohltmann, I.
  • Zanis, P.
http://linked.open...ain/vavai/riv/wos
  • 000256224500020
http://linked.open...n/vavai/riv/zamer
issn
  • 0992-7689
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