An atmospheric origin of the multi-decadal bipolar seesaw
A prominent feature of recent climatic change is the strong Arctic surface warming that is contemporaneous with broad cooling over much of Antarctica and the Southern Ocean. Longer global surface temperature observations suggest that this contrasting pole-to-pole change could be a manifestation of a...
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ftnerc:oai:nora.nerc.ac.uk:510003 2023-05-15T13:49:32+02:00 An atmospheric origin of the multi-decadal bipolar seesaw Wang, Zhaomin Zhang, Xiandong Guan, Zhaoyong Sun, Bo Yang, Xin Liu, Chengyan 2015-03-10 text http://nora.nerc.ac.uk/id/eprint/510003/ https://nora.nerc.ac.uk/id/eprint/510003/1/srep08909.pdf en eng Macmillan Publishers Ltd https://nora.nerc.ac.uk/id/eprint/510003/1/srep08909.pdf Wang, Zhaomin; Zhang, Xiandong; Guan, Zhaoyong; Sun, Bo; Yang, Xin orcid:0000-0002-3838-9758 Liu, Chengyan. 2015 An atmospheric origin of the multi-decadal bipolar seesaw. Scientific Reports, 5, 8909. https://doi.org/10.1038/srep08909 <https://doi.org/10.1038/srep08909> cc_by CC-BY Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.1038/srep08909 2023-02-04T19:41:08Z A prominent feature of recent climatic change is the strong Arctic surface warming that is contemporaneous with broad cooling over much of Antarctica and the Southern Ocean. Longer global surface temperature observations suggest that this contrasting pole-to-pole change could be a manifestation of a multi-decadal interhemispheric or bipolar seesaw pattern, which is well correlated with the North Atlantic sea surface temperature variability, and thus generally hypothesized to originate from Atlantic meridional overturning circulation oscillations. Here, we show that there is an atmospheric origin for this seesaw pattern. The results indicate that the Southern Ocean surface cooling (warming) associated with the seesaw pattern is attributable to the strengthening (weakening) of the Southern Hemisphere westerlies, which can be traced to Northern Hemisphere and tropical tropospheric warming (cooling). Antarctic ozone depletion has been suggested to be an important driving force behind the recently observed increase in the Southern Hemisphere's summer westerly winds; our results imply that Northern Hemisphere and tropical warming may have played a triggering role at an stage earlier than the first detectable Antarctic ozone depletion, and enhanced Antarctic ozone depletion through decreasing the lower stratospheric temperature. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic North Atlantic Southern Ocean Natural Environment Research Council: NERC Open Research Archive Arctic Antarctic Southern Ocean Scientific Reports 5 1 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
A prominent feature of recent climatic change is the strong Arctic surface warming that is contemporaneous with broad cooling over much of Antarctica and the Southern Ocean. Longer global surface temperature observations suggest that this contrasting pole-to-pole change could be a manifestation of a multi-decadal interhemispheric or bipolar seesaw pattern, which is well correlated with the North Atlantic sea surface temperature variability, and thus generally hypothesized to originate from Atlantic meridional overturning circulation oscillations. Here, we show that there is an atmospheric origin for this seesaw pattern. The results indicate that the Southern Ocean surface cooling (warming) associated with the seesaw pattern is attributable to the strengthening (weakening) of the Southern Hemisphere westerlies, which can be traced to Northern Hemisphere and tropical tropospheric warming (cooling). Antarctic ozone depletion has been suggested to be an important driving force behind the recently observed increase in the Southern Hemisphere's summer westerly winds; our results imply that Northern Hemisphere and tropical warming may have played a triggering role at an stage earlier than the first detectable Antarctic ozone depletion, and enhanced Antarctic ozone depletion through decreasing the lower stratospheric temperature. |
format |
Article in Journal/Newspaper |
author |
Wang, Zhaomin Zhang, Xiandong Guan, Zhaoyong Sun, Bo Yang, Xin Liu, Chengyan |
spellingShingle |
Wang, Zhaomin Zhang, Xiandong Guan, Zhaoyong Sun, Bo Yang, Xin Liu, Chengyan An atmospheric origin of the multi-decadal bipolar seesaw |
author_facet |
Wang, Zhaomin Zhang, Xiandong Guan, Zhaoyong Sun, Bo Yang, Xin Liu, Chengyan |
author_sort |
Wang, Zhaomin |
title |
An atmospheric origin of the multi-decadal bipolar seesaw |
title_short |
An atmospheric origin of the multi-decadal bipolar seesaw |
title_full |
An atmospheric origin of the multi-decadal bipolar seesaw |
title_fullStr |
An atmospheric origin of the multi-decadal bipolar seesaw |
title_full_unstemmed |
An atmospheric origin of the multi-decadal bipolar seesaw |
title_sort |
atmospheric origin of the multi-decadal bipolar seesaw |
publisher |
Macmillan Publishers Ltd |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/510003/ https://nora.nerc.ac.uk/id/eprint/510003/1/srep08909.pdf |
geographic |
Arctic Antarctic Southern Ocean |
geographic_facet |
Arctic Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Arctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Arctic North Atlantic Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/510003/1/srep08909.pdf Wang, Zhaomin; Zhang, Xiandong; Guan, Zhaoyong; Sun, Bo; Yang, Xin orcid:0000-0002-3838-9758 Liu, Chengyan. 2015 An atmospheric origin of the multi-decadal bipolar seesaw. Scientific Reports, 5, 8909. https://doi.org/10.1038/srep08909 <https://doi.org/10.1038/srep08909> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/srep08909 |
container_title |
Scientific Reports |
container_volume |
5 |
container_issue |
1 |
_version_ |
1766251481076334592 |