Is there a tropical response to recent observed southern ocean cooling?
Despite global warming, SSTs in the Southern Ocean (SO) have cooled in recent decades largely as a result of internal variability. The global impact of this cooling is assessed by nudging evolving SO SST anomalies to observations in an ensemble of coupled climate model simulations under historical r...
Published in: | Geophysical Research Letters |
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Language: | English |
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2021
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Online Access: | https://doi.org/10.1029/2020GL091235 |
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ftncar:oai:drupal-site.org:articles_24246 2024-04-14T08:03:00+00:00 Is there a tropical response to recent observed southern ocean cooling? Zhang, Xiyue (author) Deser, Clara (author) Sun, Lantao (author) 2021-03-16 https://doi.org/10.1029/2020GL091235 en eng Geophysical Research Letters--Geophys Res Lett--0094-8276--1944-8007 Data sets used in "Is there a tropical response to recent observed Southern Ocean cooling?"--10.5065/arn2-5j02 articles:24246 ark:/85065/d789197z doi:10.1029/2020GL091235 Copyright 2021 American Geophysical Union. article Text 2021 ftncar https://doi.org/10.1029/2020GL091235 2024-03-21T18:00:26Z Despite global warming, SSTs in the Southern Ocean (SO) have cooled in recent decades largely as a result of internal variability. The global impact of this cooling is assessed by nudging evolving SO SST anomalies to observations in an ensemble of coupled climate model simulations under historical radiative forcing, and comparing against a control ensemble. The most significant remote response to observed SO cooling is found in the tropical South Atlantic, where increased clouds and strengthened trade winds cool the sea surface, partially offsetting the radiatively forced warming trend. The SO ensemble produces a more realistic tropical South Atlantic SST trend, and exhibits a higher pattern correlation with observed SST trends in the greater Atlantic basin, compared to the control ensemble. SO cooling also produces a significant increase in Antarctic sea ice, but not enough to offset radiatively induced ice loss; thus, the SO ensemble remains biased in its sea ice trends. 1852977 Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Southern Ocean Geophysical Research Letters 48 5 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Despite global warming, SSTs in the Southern Ocean (SO) have cooled in recent decades largely as a result of internal variability. The global impact of this cooling is assessed by nudging evolving SO SST anomalies to observations in an ensemble of coupled climate model simulations under historical radiative forcing, and comparing against a control ensemble. The most significant remote response to observed SO cooling is found in the tropical South Atlantic, where increased clouds and strengthened trade winds cool the sea surface, partially offsetting the radiatively forced warming trend. The SO ensemble produces a more realistic tropical South Atlantic SST trend, and exhibits a higher pattern correlation with observed SST trends in the greater Atlantic basin, compared to the control ensemble. SO cooling also produces a significant increase in Antarctic sea ice, but not enough to offset radiatively induced ice loss; thus, the SO ensemble remains biased in its sea ice trends. 1852977 |
author2 |
Zhang, Xiyue (author) Deser, Clara (author) Sun, Lantao (author) |
format |
Article in Journal/Newspaper |
title |
Is there a tropical response to recent observed southern ocean cooling? |
spellingShingle |
Is there a tropical response to recent observed southern ocean cooling? |
title_short |
Is there a tropical response to recent observed southern ocean cooling? |
title_full |
Is there a tropical response to recent observed southern ocean cooling? |
title_fullStr |
Is there a tropical response to recent observed southern ocean cooling? |
title_full_unstemmed |
Is there a tropical response to recent observed southern ocean cooling? |
title_sort |
is there a tropical response to recent observed southern ocean cooling? |
publishDate |
2021 |
url |
https://doi.org/10.1029/2020GL091235 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
Geophysical Research Letters--Geophys Res Lett--0094-8276--1944-8007 Data sets used in "Is there a tropical response to recent observed Southern Ocean cooling?"--10.5065/arn2-5j02 articles:24246 ark:/85065/d789197z doi:10.1029/2020GL091235 |
op_rights |
Copyright 2021 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2020GL091235 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
5 |
_version_ |
1796319210317545472 |