Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016
After nearly three decades of observed increasing trends of Antarctic sea ice extent, in September-October-November 2016, there was a dramatic decrease. Here we document factors that contributed to that decrease. An atmosphere-only model with a specified positive convective heating anomaly in the ea...
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ftpubmed:oai:pubmedcentral.nih.gov:6312884 2023-05-15T13:58:28+02:00 Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 Meehl, Gerald A. Arblaster, Julie M. Chung, Christine T. Y. Holland, Marika M. DuVivier, Alice Thompson, LuAnne Yang, Dongxia Bitz, Cecilia M. 2019-01-02 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312884/ http://www.ncbi.nlm.nih.gov/pubmed/30600315 https://doi.org/10.1038/s41467-018-07865-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312884/ http://www.ncbi.nlm.nih.gov/pubmed/30600315 http://dx.doi.org/10.1038/s41467-018-07865-9 © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2019 ftpubmed https://doi.org/10.1038/s41467-018-07865-9 2019-01-06T01:39:33Z After nearly three decades of observed increasing trends of Antarctic sea ice extent, in September-October-November 2016, there was a dramatic decrease. Here we document factors that contributed to that decrease. An atmosphere-only model with a specified positive convective heating anomaly in the eastern Indian/western Pacific Ocean, representing the record positive precipitation anomalies there in September-October-November 2016, produces an anomalous atmospheric Rossby wave response with mid- and high latitude surface wind anomalies that contribute to the decrease of Antarctic sea ice extent. The sustained decreases of Antarctic sea ice extent after late 2016 are associated with a warmer upper Southern Ocean. This is the culmination of a negative decadal trend of wind stress curl with positive Southern Annular Mode and negative Interdecadal Pacific Oscillation, Ekman suction that results in warmer water being moved upward in the column closer to the surface, a transition to positive Interdecadal Pacific Oscillation around 2014–2016, and negative Southern Annular Mode in late 2016. Text Antarc* Antarctic Sea ice Southern Ocean PubMed Central (PMC) Antarctic Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Indian Pacific Southern Ocean Nature Communications 10 1 |
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Article Meehl, Gerald A. Arblaster, Julie M. Chung, Christine T. Y. Holland, Marika M. DuVivier, Alice Thompson, LuAnne Yang, Dongxia Bitz, Cecilia M. Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 |
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Article |
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After nearly three decades of observed increasing trends of Antarctic sea ice extent, in September-October-November 2016, there was a dramatic decrease. Here we document factors that contributed to that decrease. An atmosphere-only model with a specified positive convective heating anomaly in the eastern Indian/western Pacific Ocean, representing the record positive precipitation anomalies there in September-October-November 2016, produces an anomalous atmospheric Rossby wave response with mid- and high latitude surface wind anomalies that contribute to the decrease of Antarctic sea ice extent. The sustained decreases of Antarctic sea ice extent after late 2016 are associated with a warmer upper Southern Ocean. This is the culmination of a negative decadal trend of wind stress curl with positive Southern Annular Mode and negative Interdecadal Pacific Oscillation, Ekman suction that results in warmer water being moved upward in the column closer to the surface, a transition to positive Interdecadal Pacific Oscillation around 2014–2016, and negative Southern Annular Mode in late 2016. |
format |
Text |
author |
Meehl, Gerald A. Arblaster, Julie M. Chung, Christine T. Y. Holland, Marika M. DuVivier, Alice Thompson, LuAnne Yang, Dongxia Bitz, Cecilia M. |
author_facet |
Meehl, Gerald A. Arblaster, Julie M. Chung, Christine T. Y. Holland, Marika M. DuVivier, Alice Thompson, LuAnne Yang, Dongxia Bitz, Cecilia M. |
author_sort |
Meehl, Gerald A. |
title |
Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 |
title_short |
Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 |
title_full |
Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 |
title_fullStr |
Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 |
title_full_unstemmed |
Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 |
title_sort |
sustained ocean changes contributed to sudden antarctic sea ice retreat in late 2016 |
publisher |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312884/ http://www.ncbi.nlm.nih.gov/pubmed/30600315 https://doi.org/10.1038/s41467-018-07865-9 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Antarctic Curl Indian Pacific Southern Ocean |
geographic_facet |
Antarctic Curl Indian Pacific Southern Ocean |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312884/ http://www.ncbi.nlm.nih.gov/pubmed/30600315 http://dx.doi.org/10.1038/s41467-018-07865-9 |
op_rights |
© The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-07865-9 |
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Nature Communications |
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10 |
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