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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Online Access: | https://doi.org/10.1038/s41467-018-07865-9 |
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ftncar:oai:drupal-site.org:articles_22256 2023-09-05T13:12:47+02:00 Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 Meehl, Gerald A. (author) Arblaster, Julie M. (author) Chung, Christine T. Y. (author) Holland, Marika M. (author) DuVivier, Alice (author) Thompson, LuAnne (author) Yang, Dongxia (author) Bitz, Cecilia M. (author) 2019-01-02 https://doi.org/10.1038/s41467-018-07865-9 en eng Nature Communications--Nat Commun--2041-1723 Cheyenne: SGI ICE XA Cluster--10.5065/D6RX99HX Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1--10.5067/8GQ8LZQVL0VL articles:22256 ark:/85065/d7jd50sf doi:10.1038/s41467-018-07865-9 Copyright 2019 Author(s). This work is licensed under a Creative Commons Attribution 4.0 International license. article Text 2019 ftncar https://doi.org/10.1038/s41467-018-07865-9 2023-08-14T18:49:12Z 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. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Indian Pacific Southern Ocean Nature Communications 10 1 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
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. |
author2 |
Meehl, Gerald A. (author) Arblaster, Julie M. (author) Chung, Christine T. Y. (author) Holland, Marika M. (author) DuVivier, Alice (author) Thompson, LuAnne (author) Yang, Dongxia (author) Bitz, Cecilia M. (author) |
format |
Article in Journal/Newspaper |
title |
Sustained ocean changes contributed to sudden Antarctic sea ice retreat in late 2016 |
spellingShingle |
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 |
2019 |
url |
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 |
Nature Communications--Nat Commun--2041-1723 Cheyenne: SGI ICE XA Cluster--10.5065/D6RX99HX Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1--10.5067/8GQ8LZQVL0VL articles:22256 ark:/85065/d7jd50sf doi:10.1038/s41467-018-07865-9 |
op_rights |
Copyright 2019 Author(s). This work is licensed under a Creative Commons Attribution 4.0 International license. |
op_doi |
https://doi.org/10.1038/s41467-018-07865-9 |
container_title |
Nature Communications |
container_volume |
10 |
container_issue |
1 |
_version_ |
1776201756432138240 |