Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice
Antarctic sea ice plays an important role in polar ecosystems and global climate, while its variability is affected by many factors. Teleconnections between the tropical and high latitudes have profound impacts on Antarctic climate changes through the stationary Rossby wave mechanism. Recent studies...
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ftdoajarticles:oai:doaj.org/article:cba63ed323df4942a9372d10d9b5b3c7 2023-09-05T13:15:19+02:00 Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice Xuya Ren Li Zhang Wenju Cai Xichen Li Chuan-Yang Wang Yishuai Jin Lixin Wu 2022-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ac8f5b https://doaj.org/article/cba63ed323df4942a9372d10d9b5b3c7 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ac8f5b https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac8f5b 1748-9326 https://doaj.org/article/cba63ed323df4942a9372d10d9b5b3c7 Environmental Research Letters, Vol 17, Iss 9, p 094046 (2022) atmospheric teleconnection Antarctic sea ice tropical Atlantic interannual variability Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2022 ftdoajarticles https://doi.org/10.1088/1748-9326/ac8f5b 2023-08-13T00:36:54Z Antarctic sea ice plays an important role in polar ecosystems and global climate, while its variability is affected by many factors. Teleconnections between the tropical and high latitudes have profound impacts on Antarctic climate changes through the stationary Rossby wave mechanism. Recent studies have connected long-term Antarctic sea ice changes to multidecadal variabilities of the tropical ocean, including the Atlantic Multidecadal Oscillation and the Interdecadal Pacific Oscillation. On interannual timescales, whether an impact exists from teleconnection of the tropical Atlantic is not clear. Here we find an impact of sea surface temperature (SST) variability of the tropical Atlantic meridional dipole mode on Antarctic sea ice that is most prominent in austral autumn. The meridional dipole SST anomalies in the tropical Atlantic force deep convection anomalies locally and over the tropical Pacific, generating stationary Rossby wave trains propagating eastward and poleward, which induce atmospheric circulation anomalies affecting sea ice. Specifically, convective anomalies over the equatorial Atlantic and Pacific are opposite-signed, accompanied by anomalous wave sources over the subtropical Southern Hemisphere. The planetary-scale atmospheric response has significant impacts on sea ice concentration anomalies in the Ross Sea, near the Antarctic Peninsula, and east of the Weddell Sea. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Weddell Sea Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Austral Pacific Ross Sea The Antarctic Weddell Weddell Sea Environmental Research Letters 17 9 094046 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
atmospheric teleconnection Antarctic sea ice tropical Atlantic interannual variability Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
atmospheric teleconnection Antarctic sea ice tropical Atlantic interannual variability Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Xuya Ren Li Zhang Wenju Cai Xichen Li Chuan-Yang Wang Yishuai Jin Lixin Wu Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice |
topic_facet |
atmospheric teleconnection Antarctic sea ice tropical Atlantic interannual variability Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Antarctic sea ice plays an important role in polar ecosystems and global climate, while its variability is affected by many factors. Teleconnections between the tropical and high latitudes have profound impacts on Antarctic climate changes through the stationary Rossby wave mechanism. Recent studies have connected long-term Antarctic sea ice changes to multidecadal variabilities of the tropical ocean, including the Atlantic Multidecadal Oscillation and the Interdecadal Pacific Oscillation. On interannual timescales, whether an impact exists from teleconnection of the tropical Atlantic is not clear. Here we find an impact of sea surface temperature (SST) variability of the tropical Atlantic meridional dipole mode on Antarctic sea ice that is most prominent in austral autumn. The meridional dipole SST anomalies in the tropical Atlantic force deep convection anomalies locally and over the tropical Pacific, generating stationary Rossby wave trains propagating eastward and poleward, which induce atmospheric circulation anomalies affecting sea ice. Specifically, convective anomalies over the equatorial Atlantic and Pacific are opposite-signed, accompanied by anomalous wave sources over the subtropical Southern Hemisphere. The planetary-scale atmospheric response has significant impacts on sea ice concentration anomalies in the Ross Sea, near the Antarctic Peninsula, and east of the Weddell Sea. |
format |
Article in Journal/Newspaper |
author |
Xuya Ren Li Zhang Wenju Cai Xichen Li Chuan-Yang Wang Yishuai Jin Lixin Wu |
author_facet |
Xuya Ren Li Zhang Wenju Cai Xichen Li Chuan-Yang Wang Yishuai Jin Lixin Wu |
author_sort |
Xuya Ren |
title |
Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice |
title_short |
Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice |
title_full |
Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice |
title_fullStr |
Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice |
title_full_unstemmed |
Influence of tropical Atlantic meridional dipole of sea surface temperature anomalies on Antarctic autumn sea ice |
title_sort |
influence of tropical atlantic meridional dipole of sea surface temperature anomalies on antarctic autumn sea ice |
publisher |
IOP Publishing |
publishDate |
2022 |
url |
https://doi.org/10.1088/1748-9326/ac8f5b https://doaj.org/article/cba63ed323df4942a9372d10d9b5b3c7 |
geographic |
Antarctic Antarctic Peninsula Austral Pacific Ross Sea The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Austral Pacific Ross Sea The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Weddell Sea |
op_source |
Environmental Research Letters, Vol 17, Iss 9, p 094046 (2022) |
op_relation |
https://doi.org/10.1088/1748-9326/ac8f5b https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac8f5b 1748-9326 https://doaj.org/article/cba63ed323df4942a9372d10d9b5b3c7 |
op_doi |
https://doi.org/10.1088/1748-9326/ac8f5b |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
9 |
container_start_page |
094046 |
_version_ |
1776197127893942272 |