Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models
Using nine chemistry-climate and eight associated no-chemistry models, we investigate the persistence and timing of cold episodes occurring in the Arctic and Antarctic stratosphere during the period 1980-2014. We find systematic differences in behavior between members of these model pairs. In a firs...
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American Geophysical Union
2022
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/579353 2023-05-15T13:41:37+02:00 Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models Morgenstern, Olaf Kinnison, Douglas E. Mills, Michael Michou, Martine Horowitz, Larry W. Lin, Pu Deushi, Makoto Yoshida, Kohei O'Connor, Fiona M. Tang, Yongming Abraham, N. Luke Keeble, James Dennison, Fraser Rozanov, Eugene Egorova, Tatiana Sukhodolov, Timofei Zeng, Guang 2022-10-27 application/application/pdf https://hdl.handle.net/20.500.11850/579353 https://doi.org/10.3929/ethz-b-000579353 en eng American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JD037123 info:eu-repo/semantics/altIdentifier/wos/000871966500001 http://hdl.handle.net/20.500.11850/579353 doi:10.3929/ethz-b-000579353 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International CC-BY Journal of Geophysical Research: Atmospheres, 127 (20) ozone-climate interaction ozone depletion deep coupling climate model tuning non-orographic gravity wave info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftethz https://doi.org/20.500.11850/579353 https://doi.org/10.3929/ethz-b-000579353 https://doi.org/10.1029/2022JD037123 2023-02-13T01:14:17Z Using nine chemistry-climate and eight associated no-chemistry models, we investigate the persistence and timing of cold episodes occurring in the Arctic and Antarctic stratosphere during the period 1980-2014. We find systematic differences in behavior between members of these model pairs. In a first group of chemistry models whose dynamical configurations mirror their no-chemistry counterparts, we find an increased persistence of such cold polar vortices, such that these cold episodes often start earlier and last longer, relative to the times of occurrence of the lowest temperatures. Also the date of occurrence of the lowest temperatures, both in the Arctic and the Antarctic, is often delayed by 1-3 weeks in chemistry models, versus their no-chemistry counterparts. This behavior exacerbates a widespread problem occurring in most or all models, a delayed occurrence, in the median, of the most anomalously cold day during such cold winters. In a second group of model pairs there are differences beyond just ozone chemistry. In particular, here the chemistry models feature more levels in the stratosphere, a raised model top, and differences in non-orographic gravity wave drag versus their no-chemistry counterparts. Such additional dynamical differences can completely mask the above influence of ozone chemistry. The results point toward a need to retune chemistry-climate models versus their no-chemistry counterparts. ISSN:0148-0227 ISSN:2169-897X Article in Journal/Newspaper Antarc* Antarctic Arctic ETH Zürich Research Collection Arctic Antarctic The Antarctic |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
ozone-climate interaction ozone depletion deep coupling climate model tuning non-orographic gravity wave |
spellingShingle |
ozone-climate interaction ozone depletion deep coupling climate model tuning non-orographic gravity wave Morgenstern, Olaf Kinnison, Douglas E. Mills, Michael Michou, Martine Horowitz, Larry W. Lin, Pu Deushi, Makoto Yoshida, Kohei O'Connor, Fiona M. Tang, Yongming Abraham, N. Luke Keeble, James Dennison, Fraser Rozanov, Eugene Egorova, Tatiana Sukhodolov, Timofei Zeng, Guang Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models |
topic_facet |
ozone-climate interaction ozone depletion deep coupling climate model tuning non-orographic gravity wave |
description |
Using nine chemistry-climate and eight associated no-chemistry models, we investigate the persistence and timing of cold episodes occurring in the Arctic and Antarctic stratosphere during the period 1980-2014. We find systematic differences in behavior between members of these model pairs. In a first group of chemistry models whose dynamical configurations mirror their no-chemistry counterparts, we find an increased persistence of such cold polar vortices, such that these cold episodes often start earlier and last longer, relative to the times of occurrence of the lowest temperatures. Also the date of occurrence of the lowest temperatures, both in the Arctic and the Antarctic, is often delayed by 1-3 weeks in chemistry models, versus their no-chemistry counterparts. This behavior exacerbates a widespread problem occurring in most or all models, a delayed occurrence, in the median, of the most anomalously cold day during such cold winters. In a second group of model pairs there are differences beyond just ozone chemistry. In particular, here the chemistry models feature more levels in the stratosphere, a raised model top, and differences in non-orographic gravity wave drag versus their no-chemistry counterparts. Such additional dynamical differences can completely mask the above influence of ozone chemistry. The results point toward a need to retune chemistry-climate models versus their no-chemistry counterparts. ISSN:0148-0227 ISSN:2169-897X |
format |
Article in Journal/Newspaper |
author |
Morgenstern, Olaf Kinnison, Douglas E. Mills, Michael Michou, Martine Horowitz, Larry W. Lin, Pu Deushi, Makoto Yoshida, Kohei O'Connor, Fiona M. Tang, Yongming Abraham, N. Luke Keeble, James Dennison, Fraser Rozanov, Eugene Egorova, Tatiana Sukhodolov, Timofei Zeng, Guang |
author_facet |
Morgenstern, Olaf Kinnison, Douglas E. Mills, Michael Michou, Martine Horowitz, Larry W. Lin, Pu Deushi, Makoto Yoshida, Kohei O'Connor, Fiona M. Tang, Yongming Abraham, N. Luke Keeble, James Dennison, Fraser Rozanov, Eugene Egorova, Tatiana Sukhodolov, Timofei Zeng, Guang |
author_sort |
Morgenstern, Olaf |
title |
Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models |
title_short |
Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models |
title_full |
Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models |
title_fullStr |
Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models |
title_full_unstemmed |
Comparison of Arctic and Antarctic Stratospheric Climates in Chemistry Versus No-Chemistry Climate Models |
title_sort |
comparison of arctic and antarctic stratospheric climates in chemistry versus no-chemistry climate models |
publisher |
American Geophysical Union |
publishDate |
2022 |
url |
https://hdl.handle.net/20.500.11850/579353 https://doi.org/10.3929/ethz-b-000579353 |
geographic |
Arctic Antarctic The Antarctic |
geographic_facet |
Arctic Antarctic The Antarctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_source |
Journal of Geophysical Research: Atmospheres, 127 (20) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JD037123 info:eu-repo/semantics/altIdentifier/wos/000871966500001 http://hdl.handle.net/20.500.11850/579353 doi:10.3929/ethz-b-000579353 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.11850/579353 https://doi.org/10.3929/ethz-b-000579353 https://doi.org/10.1029/2022JD037123 |
_version_ |
1766153062925205504 |