The internal origin of the west-east asymmetry of Antarctic climate change
Recent Antarctic surface climate change has been characterized by greater warming trends in West Antarctica than in East Antarctica. Although this asymmetric feature is well recognized, its origin remains poorly understood. Here, by analyzing observation data and multimodel results, we show that a w...
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ftpubmed:oai:pubmedcentral.nih.gov:7292640 2023-05-15T13:39:35+02:00 The internal origin of the west-east asymmetry of Antarctic climate change Jun, Sang-Yoon Kim, Joo-Hong Choi, Jung Kim, Seong-Joong Kim, Baek-Min An, Soon-Il 2020-06-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7292640/ http://www.ncbi.nlm.nih.gov/pubmed/32582849 https://doi.org/10.1126/sciadv.aaz1490 en eng American Association for the Advancement of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7292640/ http://www.ncbi.nlm.nih.gov/pubmed/32582849 http://dx.doi.org/10.1126/sciadv.aaz1490 Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. CC-BY-NC Sci Adv Research Articles Text 2020 ftpubmed https://doi.org/10.1126/sciadv.aaz1490 2020-06-28T00:18:02Z Recent Antarctic surface climate change has been characterized by greater warming trends in West Antarctica than in East Antarctica. Although this asymmetric feature is well recognized, its origin remains poorly understood. Here, by analyzing observation data and multimodel results, we show that a west-east asymmetric internal mode amplified in austral winter originates from the harmony of the atmosphere-ocean coupled feedback off West Antarctica and the Antarctic terrain. The warmer ocean temperature over the West Antarctic sector has positive feedback, with an anomalous upper-tropospheric anticyclonic circulation response centered over West Antarctica, in which the strength of the feedback is controlled by the Antarctic topographic layout and the annual cycle. The current west-east asymmetry of Antarctic surface climate change is undoubtedly of natural origin because no external factors (e.g., orbital or anthropogenic factors) contribute to the asymmetric mode. Text Antarc* Antarctic Antarctica East Antarctica West Antarctica PubMed Central (PMC) Antarctic Austral East Antarctica The Antarctic West Antarctica Science Advances 6 24 eaaz1490 |
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Research Articles Jun, Sang-Yoon Kim, Joo-Hong Choi, Jung Kim, Seong-Joong Kim, Baek-Min An, Soon-Il The internal origin of the west-east asymmetry of Antarctic climate change |
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Research Articles |
description |
Recent Antarctic surface climate change has been characterized by greater warming trends in West Antarctica than in East Antarctica. Although this asymmetric feature is well recognized, its origin remains poorly understood. Here, by analyzing observation data and multimodel results, we show that a west-east asymmetric internal mode amplified in austral winter originates from the harmony of the atmosphere-ocean coupled feedback off West Antarctica and the Antarctic terrain. The warmer ocean temperature over the West Antarctic sector has positive feedback, with an anomalous upper-tropospheric anticyclonic circulation response centered over West Antarctica, in which the strength of the feedback is controlled by the Antarctic topographic layout and the annual cycle. The current west-east asymmetry of Antarctic surface climate change is undoubtedly of natural origin because no external factors (e.g., orbital or anthropogenic factors) contribute to the asymmetric mode. |
format |
Text |
author |
Jun, Sang-Yoon Kim, Joo-Hong Choi, Jung Kim, Seong-Joong Kim, Baek-Min An, Soon-Il |
author_facet |
Jun, Sang-Yoon Kim, Joo-Hong Choi, Jung Kim, Seong-Joong Kim, Baek-Min An, Soon-Il |
author_sort |
Jun, Sang-Yoon |
title |
The internal origin of the west-east asymmetry of Antarctic climate change |
title_short |
The internal origin of the west-east asymmetry of Antarctic climate change |
title_full |
The internal origin of the west-east asymmetry of Antarctic climate change |
title_fullStr |
The internal origin of the west-east asymmetry of Antarctic climate change |
title_full_unstemmed |
The internal origin of the west-east asymmetry of Antarctic climate change |
title_sort |
internal origin of the west-east asymmetry of antarctic climate change |
publisher |
American Association for the Advancement of Science |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7292640/ http://www.ncbi.nlm.nih.gov/pubmed/32582849 https://doi.org/10.1126/sciadv.aaz1490 |
geographic |
Antarctic Austral East Antarctica The Antarctic West Antarctica |
geographic_facet |
Antarctic Austral East Antarctica The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica West Antarctica |
op_source |
Sci Adv |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7292640/ http://www.ncbi.nlm.nih.gov/pubmed/32582849 http://dx.doi.org/10.1126/sciadv.aaz1490 |
op_rights |
Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
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CC-BY-NC |
op_doi |
https://doi.org/10.1126/sciadv.aaz1490 |
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Science Advances |
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6 |
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24 |
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