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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ftosti:oai:osti.gov:1609290 2023-07-30T03:57:21+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. 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1609290 https://www.osti.gov/biblio/1609290 https://doi.org/10.1038/s41467-018-07865-9 unknown http://www.osti.gov/servlets/purl/1609290 https://www.osti.gov/biblio/1609290 https://doi.org/10.1038/s41467-018-07865-9 doi:10.1038/s41467-018-07865-9 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.1038/s41467-018-07865-9 2023-07-11T09:41:06Z 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. Other/Unknown Material Antarc* Antarctic Sea ice Southern Ocean SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Antarctic Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Indian Pacific Southern Ocean Nature Communications 10 1 |
institution |
Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES 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 |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
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. |
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 |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1609290 https://www.osti.gov/biblio/1609290 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.osti.gov/servlets/purl/1609290 https://www.osti.gov/biblio/1609290 https://doi.org/10.1038/s41467-018-07865-9 doi:10.1038/s41467-018-07865-9 |
op_doi |
https://doi.org/10.1038/s41467-018-07865-9 |
container_title |
Nature Communications |
container_volume |
10 |
container_issue |
1 |
_version_ |
1772817074079399936 |