Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole
A model simulation forced by prescribed ozone depletion shows strong dynamical modulation of the springtime cooling of the polar stratosphere associated with the Antarctic ozone hole. The authors find that in late spring the anomalous radiative cooling in response to ozone depletion is almost cancel...
Published in: | Journal of Climate |
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Language: | English |
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American Meteorological Society
2013
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Online Access: | http://nora.nerc.ac.uk/id/eprint/500802/ https://nora.nerc.ac.uk/id/eprint/500802/1/JCLI-D-12-00480.pdf https://doi.org/10.1175/JCLI-D-12-00480.1 |
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ftnerc:oai:nora.nerc.ac.uk:500802 2023-05-15T13:48:07+02:00 Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole Orr, Andrew Bracegirdle, Thomas J. Hosking, J. Scott Feng, Wuhu Roscoe, Howard K. Haigh, Joanna D. 2013-01 text http://nora.nerc.ac.uk/id/eprint/500802/ https://nora.nerc.ac.uk/id/eprint/500802/1/JCLI-D-12-00480.pdf https://doi.org/10.1175/JCLI-D-12-00480.1 en eng American Meteorological Society https://nora.nerc.ac.uk/id/eprint/500802/1/JCLI-D-12-00480.pdf Orr, Andrew orcid:0000-0001-5111-8402 Bracegirdle, Thomas J. orcid:0000-0002-8868-4739 Hosking, J. Scott orcid:0000-0002-3646-3504 Feng, Wuhu; Roscoe, Howard K.; Haigh, Joanna D. 2013 Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole. Journal of Climate, 26 (2). 662-668. https://doi.org/10.1175/JCLI-D-12-00480.1 <https://doi.org/10.1175/JCLI-D-12-00480.1> Publication - Article PeerReviewed 2013 ftnerc https://doi.org/10.1175/JCLI-D-12-00480.1 2023-02-04T19:36:31Z A model simulation forced by prescribed ozone depletion shows strong dynamical modulation of the springtime cooling of the polar stratosphere associated with the Antarctic ozone hole. The authors find that in late spring the anomalous radiative cooling in response to ozone depletion is almost canceled above ~100 hPa by an increase in dynamical heating. Between ~300 and ~100 hPa, however, it is enhanced by a reduction in dynamical heating, resulting in the descent of the cold anomaly down to the tropopause. In early summer increased dynamical heating dominates as the radiative cooling diminishes so that the cold anomaly associated with the delayed breakup of the stratospheric vortex is reduced. The anomalous dynamical heating is driven by changes in the Brewer–Dobson circulation arising primarily from the dissipation of resolved-scale waves. The model changes are broadly consistent with trends from reanalysis and offline diagnoses of heating rates using a radiation scheme. These results help one to understand dynamically induced change in the evolution and timing of the stratospheric vortex in recent decades and will help to enable improved simulation of the Southern Hemisphere climate. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Journal of Climate 26 2 662 668 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
A model simulation forced by prescribed ozone depletion shows strong dynamical modulation of the springtime cooling of the polar stratosphere associated with the Antarctic ozone hole. The authors find that in late spring the anomalous radiative cooling in response to ozone depletion is almost canceled above ~100 hPa by an increase in dynamical heating. Between ~300 and ~100 hPa, however, it is enhanced by a reduction in dynamical heating, resulting in the descent of the cold anomaly down to the tropopause. In early summer increased dynamical heating dominates as the radiative cooling diminishes so that the cold anomaly associated with the delayed breakup of the stratospheric vortex is reduced. The anomalous dynamical heating is driven by changes in the Brewer–Dobson circulation arising primarily from the dissipation of resolved-scale waves. The model changes are broadly consistent with trends from reanalysis and offline diagnoses of heating rates using a radiation scheme. These results help one to understand dynamically induced change in the evolution and timing of the stratospheric vortex in recent decades and will help to enable improved simulation of the Southern Hemisphere climate. |
format |
Article in Journal/Newspaper |
author |
Orr, Andrew Bracegirdle, Thomas J. Hosking, J. Scott Feng, Wuhu Roscoe, Howard K. Haigh, Joanna D. |
spellingShingle |
Orr, Andrew Bracegirdle, Thomas J. Hosking, J. Scott Feng, Wuhu Roscoe, Howard K. Haigh, Joanna D. Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole |
author_facet |
Orr, Andrew Bracegirdle, Thomas J. Hosking, J. Scott Feng, Wuhu Roscoe, Howard K. Haigh, Joanna D. |
author_sort |
Orr, Andrew |
title |
Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole |
title_short |
Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole |
title_full |
Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole |
title_fullStr |
Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole |
title_full_unstemmed |
Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole |
title_sort |
strong dynamical modulation of the cooling of the polar stratosphere associated with the antarctic ozone hole |
publisher |
American Meteorological Society |
publishDate |
2013 |
url |
http://nora.nerc.ac.uk/id/eprint/500802/ https://nora.nerc.ac.uk/id/eprint/500802/1/JCLI-D-12-00480.pdf https://doi.org/10.1175/JCLI-D-12-00480.1 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/500802/1/JCLI-D-12-00480.pdf Orr, Andrew orcid:0000-0001-5111-8402 Bracegirdle, Thomas J. orcid:0000-0002-8868-4739 Hosking, J. Scott orcid:0000-0002-3646-3504 Feng, Wuhu; Roscoe, Howard K.; Haigh, Joanna D. 2013 Strong dynamical modulation of the cooling of the polar stratosphere associated with the Antarctic ozone hole. Journal of Climate, 26 (2). 662-668. https://doi.org/10.1175/JCLI-D-12-00480.1 <https://doi.org/10.1175/JCLI-D-12-00480.1> |
op_doi |
https://doi.org/10.1175/JCLI-D-12-00480.1 |
container_title |
Journal of Climate |
container_volume |
26 |
container_issue |
2 |
container_start_page |
662 |
op_container_end_page |
668 |
_version_ |
1766248634728316928 |