Tropical teleconnection impacts on Antarctic climate changes
Over the modern satellite era, substantial climatic changes have been observed in the Antarctic, including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-wide expansion of sea ice, followed by a more recent rapid loss. Although these changes, featuring strong zonal asymm...
Published in: | Nature Reviews Earth & Environment |
---|---|
Main Authors: | , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2021
|
Subjects: | |
Online Access: | http://hdl.handle.net/2078.1/250423 https://doi.org/10.1038/s43017-021-00204-5 |
id |
ftunistlouisbrus:oai:dial.uclouvain.be:boreal:250423 |
---|---|
record_format |
openpolar |
spelling |
ftunistlouisbrus:oai:dial.uclouvain.be:boreal:250423 2024-05-12T07:53:49+00:00 Tropical teleconnection impacts on Antarctic climate changes Li, Xichen Cai, Wenju Meehl, Gerald A. Chen, Dake Goosse, Hugues UCL - SST/ELI/ELIC - Earth & Climate 2021 http://hdl.handle.net/2078.1/250423 https://doi.org/10.1038/s43017-021-00204-5 eng eng Springer Science and Business Media LLC boreal:250423 http://hdl.handle.net/2078.1/250423 doi:10.1038/s43017-021-00204-5 urn:EISSN:2662-138X info:eu-repo/semantics/openAccess Nature Reviews Earth & Environment, , p. 19 (2021) info:eu-repo/semantics/article 2021 ftunistlouisbrus https://doi.org/10.1038/s43017-021-00204-5 2024-04-18T17:16:09Z Over the modern satellite era, substantial climatic changes have been observed in the Antarctic, including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-wide expansion of sea ice, followed by a more recent rapid loss. Although these changes, featuring strong zonal asymmetry, are partially influenced by increasing greenhouse gas emissions and stratospheric ozone depletion, tropical–polar teleconnections are believed to have a role through Rossby wave dynamics. In this Review, we synthesize understanding of tropical teleconnections to the Southern Hemisphere extratropics arising from the El Niño–Southern Oscillation, Interdecadal Pacific Oscillation and Atlantic Multidecadal Oscillation, focusing on the mechanisms and long-term climatic impacts. These teleconnections have contributed to observed Antarctic and Southern Ocean changes, including regional rapid surface warming, pre-2015 sea ice expansion and its sudden reduction thereafter, changes in ocean heat content and accelerated thinning of most of the Antarctic ice sheet. However, due to limited observations and inherent model biases, uncertainties remain in understanding and assessing the importance of these teleconnections versus those arising from greenhouse gases, ozone recovery and internal variability. Sustained pan-Antarctic efforts towards long-term observations, and more realistic dynamics and parameterizations in high-resolution climate models, offer opportunities to reduce these uncertainties. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Sea ice Southern Ocean DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic Pacific Southern Ocean The Antarctic Nature Reviews Earth & Environment |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
description |
Over the modern satellite era, substantial climatic changes have been observed in the Antarctic, including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-wide expansion of sea ice, followed by a more recent rapid loss. Although these changes, featuring strong zonal asymmetry, are partially influenced by increasing greenhouse gas emissions and stratospheric ozone depletion, tropical–polar teleconnections are believed to have a role through Rossby wave dynamics. In this Review, we synthesize understanding of tropical teleconnections to the Southern Hemisphere extratropics arising from the El Niño–Southern Oscillation, Interdecadal Pacific Oscillation and Atlantic Multidecadal Oscillation, focusing on the mechanisms and long-term climatic impacts. These teleconnections have contributed to observed Antarctic and Southern Ocean changes, including regional rapid surface warming, pre-2015 sea ice expansion and its sudden reduction thereafter, changes in ocean heat content and accelerated thinning of most of the Antarctic ice sheet. However, due to limited observations and inherent model biases, uncertainties remain in understanding and assessing the importance of these teleconnections versus those arising from greenhouse gases, ozone recovery and internal variability. Sustained pan-Antarctic efforts towards long-term observations, and more realistic dynamics and parameterizations in high-resolution climate models, offer opportunities to reduce these uncertainties. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Li, Xichen Cai, Wenju Meehl, Gerald A. Chen, Dake Goosse, Hugues |
spellingShingle |
Li, Xichen Cai, Wenju Meehl, Gerald A. Chen, Dake Goosse, Hugues Tropical teleconnection impacts on Antarctic climate changes |
author_facet |
Li, Xichen Cai, Wenju Meehl, Gerald A. Chen, Dake Goosse, Hugues |
author_sort |
Li, Xichen |
title |
Tropical teleconnection impacts on Antarctic climate changes |
title_short |
Tropical teleconnection impacts on Antarctic climate changes |
title_full |
Tropical teleconnection impacts on Antarctic climate changes |
title_fullStr |
Tropical teleconnection impacts on Antarctic climate changes |
title_full_unstemmed |
Tropical teleconnection impacts on Antarctic climate changes |
title_sort |
tropical teleconnection impacts on antarctic climate changes |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://hdl.handle.net/2078.1/250423 https://doi.org/10.1038/s43017-021-00204-5 |
geographic |
Antarctic Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
op_source |
Nature Reviews Earth & Environment, , p. 19 (2021) |
op_relation |
boreal:250423 http://hdl.handle.net/2078.1/250423 doi:10.1038/s43017-021-00204-5 urn:EISSN:2662-138X |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s43017-021-00204-5 |
container_title |
Nature Reviews Earth & Environment |
_version_ |
1798844870940426240 |