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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ftpubmed:oai:pubmedcentral.nih.gov:4354075 2023-05-15T13:56:01+02:00 An atmospheric origin of the multi-decadal bipolar seesaw Wang, Zhaomin Zhang, Xiangdong Guan, Zhaoyong Sun, Bo Yang, Xin Liu, Chengyan 2015-03-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4354075 http://www.ncbi.nlm.nih.gov/pubmed/25752943 https://doi.org/10.1038/srep08909 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25752943 http://dx.doi.org/10.1038/srep08909 Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2015 ftpubmed https://doi.org/10.1038/srep08909 2015-03-22T01:02:27Z 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. Text Antarc* Antarctic Antarctica Arctic North Atlantic Southern Ocean PubMed Central (PMC) Antarctic Arctic Southern Ocean Scientific Reports 5 1 |
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Article Wang, Zhaomin Zhang, Xiangdong Guan, Zhaoyong Sun, Bo Yang, Xin Liu, Chengyan An atmospheric origin of the multi-decadal bipolar seesaw |
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Article |
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 |
Text |
author |
Wang, Zhaomin Zhang, Xiangdong Guan, Zhaoyong Sun, Bo Yang, Xin Liu, Chengyan |
author_facet |
Wang, Zhaomin Zhang, Xiangdong 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 |
Nature Publishing Group |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4354075 http://www.ncbi.nlm.nih.gov/pubmed/25752943 https://doi.org/10.1038/srep08909 |
geographic |
Antarctic Arctic Southern Ocean |
geographic_facet |
Antarctic Arctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Arctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Arctic North Atlantic Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25752943 http://dx.doi.org/10.1038/srep08909 |
op_rights |
Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
op_doi |
https://doi.org/10.1038/srep08909 |
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Scientific Reports |
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5 |
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1 |
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