The simulation of the Antarctic ozone hole by chemistry-climate models
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) con...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00047651 2023-05-15T13:55:41+02:00 The simulation of the Antarctic ozone hole by chemistry-climate models Struthers, H. Bodeker, G. E. Austin, J. Bekki, S. Cionni, I. Dameris, M. Giorgetta, M. A. Grewe, V. Lefèvre, F. Lott, F. Manzini, E. Peter, T. Rozanov, E. Schraner, M. 2009-09 electronic https://doi.org/10.5194/acp-9-6363-2009 https://noa.gwlb.de/receive/cop_mods_00047651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047271/acp-9-6363-2009.pdf https://acp.copernicus.org/articles/9/6363/2009/acp-9-6363-2009.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-9-6363-2009 https://noa.gwlb.de/receive/cop_mods_00047651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047271/acp-9-6363-2009.pdf https://acp.copernicus.org/articles/9/6363/2009/acp-9-6363-2009.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2009 ftnonlinearchiv https://doi.org/10.5194/acp-9-6363-2009 2022-02-08T22:38:21Z 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 220 DU 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. Article in Journal/Newspaper Antarc* Antarctic Niedersächsisches Online-Archiv NOA Antarctic The Antarctic Atmospheric Chemistry and Physics 9 17 6363 6376 |
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article Verlagsveröffentlichung Struthers, H. Bodeker, G. E. Austin, J. Bekki, S. Cionni, I. Dameris, M. Giorgetta, M. A. Grewe, V. Lefèvre, F. Lott, F. Manzini, E. Peter, T. Rozanov, E. Schraner, M. The simulation of the Antarctic ozone hole by chemistry-climate models |
topic_facet |
article Verlagsveröffentlichung |
description |
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 220 DU 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. |
format |
Article in Journal/Newspaper |
author |
Struthers, H. Bodeker, G. E. Austin, J. Bekki, S. Cionni, I. Dameris, M. Giorgetta, M. A. Grewe, V. Lefèvre, F. Lott, F. Manzini, E. Peter, T. Rozanov, E. Schraner, M. |
author_facet |
Struthers, H. Bodeker, G. E. Austin, J. Bekki, S. Cionni, I. Dameris, M. Giorgetta, M. A. Grewe, V. Lefèvre, F. Lott, F. Manzini, E. Peter, T. Rozanov, E. Schraner, M. |
author_sort |
Struthers, H. |
title |
The simulation of the Antarctic ozone hole by chemistry-climate models |
title_short |
The simulation of the Antarctic ozone hole by chemistry-climate models |
title_full |
The simulation of the Antarctic ozone hole by chemistry-climate models |
title_fullStr |
The simulation of the Antarctic ozone hole by chemistry-climate models |
title_full_unstemmed |
The simulation of the Antarctic ozone hole by chemistry-climate models |
title_sort |
simulation of the antarctic ozone hole by chemistry-climate models |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doi.org/10.5194/acp-9-6363-2009 https://noa.gwlb.de/receive/cop_mods_00047651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047271/acp-9-6363-2009.pdf https://acp.copernicus.org/articles/9/6363/2009/acp-9-6363-2009.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-9-6363-2009 https://noa.gwlb.de/receive/cop_mods_00047651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047271/acp-9-6363-2009.pdf https://acp.copernicus.org/articles/9/6363/2009/acp-9-6363-2009.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-9-6363-2009 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
9 |
container_issue |
17 |
container_start_page |
6363 |
op_container_end_page |
6376 |
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1766262491616116736 |