Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models
We study the response of the Southern Hemisphere circulation to the 1982 eruption of El Chichón and 1991 eruption of Pinatubo volcanoes in a suite of up-to-date coupled climate models. We find a significant response in austral spring and autumn in the years following the eruptions, which consists of...
Published in: | Quarterly Journal of the Royal Meteorological Society |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:20335 2023-05-15T13:52:43+02:00 Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models Karpechko, Alexey Yu. Gillett, Nathan P. Dall'Amico, Mauro Gray, Lesley J. 2010 https://ueaeprints.uea.ac.uk/id/eprint/20335/ https://doi.org/10.1002/qj.683 unknown Karpechko, Alexey Yu., Gillett, Nathan P., Dall'Amico, Mauro and Gray, Lesley J. (2010) Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models. Quarterly Journal of the Royal Meteorological Society, 136 (652). pp. 1813-1822. ISSN 1477-870X doi:10.1002/qj.683 Article PeerReviewed 2010 ftuniveastangl https://doi.org/10.1002/qj.683 2023-01-30T21:24:50Z We study the response of the Southern Hemisphere circulation to the 1982 eruption of El Chichón and 1991 eruption of Pinatubo volcanoes in a suite of up-to-date coupled climate models. We find a significant response in austral spring and autumn in the years following the eruptions, which consists of a stronger stratospheric polar vortex and lowered sea-level pressure over the Antarctic, both consistent with the positive phase of the Southern Annular Mode. The seasonality of the response may be explained in terms of zonal flow-planetary wave interactions. This dynamical response is inconsistent with the observational reanalyses in the polar stratosphere in spring, but not in the troposphere where the internal variability is large compared to the magnitude of the response. Article in Journal/Newspaper Antarc* Antarctic University of East Anglia: UEA Digital Repository Antarctic Austral The Antarctic Quarterly Journal of the Royal Meteorological Society 136 652 1813 1822 |
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Open Polar |
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University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
language |
unknown |
description |
We study the response of the Southern Hemisphere circulation to the 1982 eruption of El Chichón and 1991 eruption of Pinatubo volcanoes in a suite of up-to-date coupled climate models. We find a significant response in austral spring and autumn in the years following the eruptions, which consists of a stronger stratospheric polar vortex and lowered sea-level pressure over the Antarctic, both consistent with the positive phase of the Southern Annular Mode. The seasonality of the response may be explained in terms of zonal flow-planetary wave interactions. This dynamical response is inconsistent with the observational reanalyses in the polar stratosphere in spring, but not in the troposphere where the internal variability is large compared to the magnitude of the response. |
format |
Article in Journal/Newspaper |
author |
Karpechko, Alexey Yu. Gillett, Nathan P. Dall'Amico, Mauro Gray, Lesley J. |
spellingShingle |
Karpechko, Alexey Yu. Gillett, Nathan P. Dall'Amico, Mauro Gray, Lesley J. Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models |
author_facet |
Karpechko, Alexey Yu. Gillett, Nathan P. Dall'Amico, Mauro Gray, Lesley J. |
author_sort |
Karpechko, Alexey Yu. |
title |
Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models |
title_short |
Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models |
title_full |
Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models |
title_fullStr |
Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models |
title_full_unstemmed |
Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models |
title_sort |
southern hemisphere atmospheric circulation response to the el chichon and pinatubo eruptions in coupled climate models |
publishDate |
2010 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/20335/ https://doi.org/10.1002/qj.683 |
geographic |
Antarctic Austral The Antarctic |
geographic_facet |
Antarctic Austral The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Karpechko, Alexey Yu., Gillett, Nathan P., Dall'Amico, Mauro and Gray, Lesley J. (2010) Southern Hemisphere atmospheric circulation response to the El Chichon and Pinatubo eruptions in coupled climate models. Quarterly Journal of the Royal Meteorological Society, 136 (652). pp. 1813-1822. ISSN 1477-870X doi:10.1002/qj.683 |
op_doi |
https://doi.org/10.1002/qj.683 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
136 |
container_issue |
652 |
container_start_page |
1813 |
op_container_end_page |
1822 |
_version_ |
1766257189239914496 |