East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer
While West Antarctica has experienced the most significant warming in the world, a profound cooling trend in austral summer was observed over East Antarctica (30°W to 150°E, 70° to 90°S) from 1979 to 2014. Previous studies attributed these changes to high-latitude atmospheric dynamics, stratospheric...
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ftpubmed:oai:pubmedcentral.nih.gov:8221627 2023-05-15T14:07:43+02:00 East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer Hsu, Pang-Chi Fu, Zhen Murakami, Hiroyuki Lee, June-Yi Yoo, Changhyun Johnson, Nathaniel C. Chang, Chueh-Hsin Liu, Yu 2021-06-23 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8221627/ http://www.ncbi.nlm.nih.gov/pubmed/34162543 https://doi.org/10.1126/sciadv.abf9903 en eng American Association for the Advancement of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8221627/ http://www.ncbi.nlm.nih.gov/pubmed/34162543 http://dx.doi.org/10.1126/sciadv.abf9903 Copyright © 2021 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). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://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 2021 ftpubmed https://doi.org/10.1126/sciadv.abf9903 2021-07-04T00:44:46Z While West Antarctica has experienced the most significant warming in the world, a profound cooling trend in austral summer was observed over East Antarctica (30°W to 150°E, 70° to 90°S) from 1979 to 2014. Previous studies attributed these changes to high-latitude atmospheric dynamics, stratospheric ozone change, and tropical sea surface temperature anomalies. We show that up to 20 to 40% of the observed summer cooling trend in East Antarctica was forced by decadal changes of the Madden-Julian oscillation (MJO). Both observational analysis and climate model experiments indicate that the decadal changes in the MJO, characterized by less (more) atmospheric deep convection in the Indian Ocean (western Pacific) during the recent two decades, led to the net cooling trend over East Antarctica through modifying atmospheric circulations linked to poleward-propagating Rossby wave trains. This study highlights that changes in intraseasonal tropical climate patterns may result in important climate change over Antarctica. Text Antarc* Antarctic Antarctica East Antarctica West Antarctica PubMed Central (PMC) Antarctic Austral East Antarctica Indian Pacific West Antarctica Science Advances 7 26 eabf9903 |
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Research Articles |
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Research Articles Hsu, Pang-Chi Fu, Zhen Murakami, Hiroyuki Lee, June-Yi Yoo, Changhyun Johnson, Nathaniel C. Chang, Chueh-Hsin Liu, Yu East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer |
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Research Articles |
description |
While West Antarctica has experienced the most significant warming in the world, a profound cooling trend in austral summer was observed over East Antarctica (30°W to 150°E, 70° to 90°S) from 1979 to 2014. Previous studies attributed these changes to high-latitude atmospheric dynamics, stratospheric ozone change, and tropical sea surface temperature anomalies. We show that up to 20 to 40% of the observed summer cooling trend in East Antarctica was forced by decadal changes of the Madden-Julian oscillation (MJO). Both observational analysis and climate model experiments indicate that the decadal changes in the MJO, characterized by less (more) atmospheric deep convection in the Indian Ocean (western Pacific) during the recent two decades, led to the net cooling trend over East Antarctica through modifying atmospheric circulations linked to poleward-propagating Rossby wave trains. This study highlights that changes in intraseasonal tropical climate patterns may result in important climate change over Antarctica. |
format |
Text |
author |
Hsu, Pang-Chi Fu, Zhen Murakami, Hiroyuki Lee, June-Yi Yoo, Changhyun Johnson, Nathaniel C. Chang, Chueh-Hsin Liu, Yu |
author_facet |
Hsu, Pang-Chi Fu, Zhen Murakami, Hiroyuki Lee, June-Yi Yoo, Changhyun Johnson, Nathaniel C. Chang, Chueh-Hsin Liu, Yu |
author_sort |
Hsu, Pang-Chi |
title |
East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer |
title_short |
East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer |
title_full |
East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer |
title_fullStr |
East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer |
title_full_unstemmed |
East Antarctic cooling induced by decadal changes in Madden-Julian oscillation during austral summer |
title_sort |
east antarctic cooling induced by decadal changes in madden-julian oscillation during austral summer |
publisher |
American Association for the Advancement of Science |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8221627/ http://www.ncbi.nlm.nih.gov/pubmed/34162543 https://doi.org/10.1126/sciadv.abf9903 |
geographic |
Antarctic Austral East Antarctica Indian Pacific West Antarctica |
geographic_facet |
Antarctic Austral East Antarctica Indian Pacific 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/PMC8221627/ http://www.ncbi.nlm.nih.gov/pubmed/34162543 http://dx.doi.org/10.1126/sciadv.abf9903 |
op_rights |
Copyright © 2021 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). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://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.abf9903 |
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Science Advances |
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7 |
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26 |
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