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Sökning: onr:"swepub:oai:DiVA.org:su-59981" > The simulation of t...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003895naa a2200613 4500
001oai:DiVA.org:su-59981
003SwePub
008110802s2009 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-599812 URI
0247 a https://doi.org/10.5194/acp-9-6363-20092 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Struthers, Hamishu Stockholms universitet,Institutionen för tillämpad miljövetenskap (ITM)4 aut0 (Swepub:su)hstru
2451 0a The simulation of the Antarctic ozone hole by chemistry-climate models
264 c 2009-09-03
264 1b Copernicus GmbH,c 2009
338 a print2 rdacarrier
500 a authorCount :14
520 a While chemistry-climate models are able to reproduce many characteristics of the global total column ozone field and its long-term evolution, they have fared less well in simulating the commonly used diagnostic of the area of the Antarctic ozone hole i.e. the area within the 220 Dobson Unit (DU) contour. Two possible reasons for this are: (1) the underlying Global Climate Model (GCM) does not correctly simulate the size of the polar vortex, and (2) the stratospheric chemistry scheme incorporated into the GCM, and/or the model dynamics, results in systematic biases in the total column ozone fields such that the 220DU contour is no longer appropriate for delineating the edge of the ozone hole. Both causes are examined here with a view to developing ozone hole area diagnostics that better suit measurement-model inter-comparisons. The interplay between the shape of the meridional mixing barrier at the edge of the vortex and the meridional gradients in total column ozone across the vortex edge is investigated in measurements and in 5 chemistry-climate models (CCMs). Analysis of the simulation of the polar vortex in the CCMs shows that the first of the two possible causes does play a role in some models. This in turn affects the ability of the models to simulate the large observed meridional gradients in total column ozone. The second of the two causes also strongly affects the ability of the CCMs to track the observed size of the ozone hole. It is shown that by applying a common algorithm to the CCMs for selecting a delineating threshold unique to each model, a more appropriate diagnostic of ozone hole area can be generated that shows better agreement with that derived from observations.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a doppler-spread parameterization
653 a general-circulation model
653 a gravity-wave-drag
653 a middle atmosphere
653 a lagrangian transport
653 a transient simulation
653 a potential vorticity
653 a polar vortex
653 a depletion
653 a impact
653 a Physics
653 a Fysik
7001 a Bodeker, G. E.4 aut
7001 a Austin, J.4 aut
7001 a Bekki, S.4 aut
7001 a Cionni, I.4 aut
7001 a Dameris, M.4 aut
7001 a Giorgetta, M. A.4 aut
7001 a Grewe, V.4 aut
7001 a Lefevre, F.4 aut
7001 a Lott, F.4 aut
7001 a Manzini, E.4 aut
7001 a Peter, T.4 aut
7001 a Rozanov, E.4 aut
7001 a Schraner, M.4 aut
7102 a Stockholms universitetb Institutionen för tillämpad miljövetenskap (ITM)4 org
7730 t Atmospheric Chemistry And Physicsd : Copernicus GmbHg 9:17, s. 6363-6376q 9:17<6363-6376x 1680-7316x 1680-7324
8564 u https://www.atmos-chem-phys.net/9/6363/2009/acp-9-6363-2009.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-59981
8564 8u https://doi.org/10.5194/acp-9-6363-2009

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