Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales
Recent changes in the strength and location of the Southern Hemisphere westerly winds (SHW) have been linked to continental droughts and wildfires, changes in the Southern Ocean carbon sink, sea ice extent, ocean circulation, and ice shelf stability. Despite their critical role, our ability to predi...
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ftunivgent:oai:archive.ugent.be:8734914 2023-12-24T10:10:30+01:00 Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales Perren, Bianca B. Hodgson, Dominic A. Roberts, Stephen J. Sime, Louise Van Nieuwenhuyze, Wim Verleyen, Elie Vyverman, Wim 2020 application/pdf https://biblio.ugent.be/publication/8734914 http://hdl.handle.net/1854/LU-8734914 https://doi.org/10.1038/s43247-020-00059-6 https://biblio.ugent.be/publication/8734914/file/8750018 eng eng https://biblio.ugent.be/publication/8734914 http://hdl.handle.net/1854/LU-8734914 http://doi.org/10.1038/s43247-020-00059-6 https://biblio.ugent.be/publication/8734914/file/8750018 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess COMMUNICATIONS EARTH & ENVIRONMENT ISSN: 2662-4435 Biology and Life Sciences WINTER RAINFALL ZONE ANTARCTIC ICE-SHEET ANNULAR MODE PRECIPITATION VARIABILITY AUSTRALIAN RAINFALL TRENDS OCEAN TEMPERATURE AGE PATAGONIA journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2020 ftunivgent https://doi.org/10.1038/s43247-020-00059-6 2023-11-29T23:08:34Z Recent changes in the strength and location of the Southern Hemisphere westerly winds (SHW) have been linked to continental droughts and wildfires, changes in the Southern Ocean carbon sink, sea ice extent, ocean circulation, and ice shelf stability. Despite their critical role, our ability to predict their impacts under future climates is limited by a lack of data on SHW behaviour over centennial timescales. Here, we present a 700-year record of changes in SHW intensity from sub-Antarctic Marion Island using diatom and geochemical proxies and compare it with paleoclimate records and recent instrumental data. During cool periods, such as the Little Ice Age (c. 1400-1870 CE), the winds weakened and shifted towards the equator, and during warm periods they intensified and migrated poleward. These results imply that changes in the latitudinal temperature gradient drive century-scale SHW migrations, and that intensification of impacts can be anticipated in the coming century. Warmer periods correspond with poleward migration of the Southern Hemisphere westerly winds over the past 700 years and vice versa, according to multi-proxy records from a lake sediment core on sub-Antarctic Marion Island. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelf Marion Island Sea ice Southern Ocean Ghent University Academic Bibliography Antarctic Southern Ocean Patagonia Communications Earth & Environment 1 1 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences WINTER RAINFALL ZONE ANTARCTIC ICE-SHEET ANNULAR MODE PRECIPITATION VARIABILITY AUSTRALIAN RAINFALL TRENDS OCEAN TEMPERATURE AGE PATAGONIA |
spellingShingle |
Biology and Life Sciences WINTER RAINFALL ZONE ANTARCTIC ICE-SHEET ANNULAR MODE PRECIPITATION VARIABILITY AUSTRALIAN RAINFALL TRENDS OCEAN TEMPERATURE AGE PATAGONIA Perren, Bianca B. Hodgson, Dominic A. Roberts, Stephen J. Sime, Louise Van Nieuwenhuyze, Wim Verleyen, Elie Vyverman, Wim Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales |
topic_facet |
Biology and Life Sciences WINTER RAINFALL ZONE ANTARCTIC ICE-SHEET ANNULAR MODE PRECIPITATION VARIABILITY AUSTRALIAN RAINFALL TRENDS OCEAN TEMPERATURE AGE PATAGONIA |
description |
Recent changes in the strength and location of the Southern Hemisphere westerly winds (SHW) have been linked to continental droughts and wildfires, changes in the Southern Ocean carbon sink, sea ice extent, ocean circulation, and ice shelf stability. Despite their critical role, our ability to predict their impacts under future climates is limited by a lack of data on SHW behaviour over centennial timescales. Here, we present a 700-year record of changes in SHW intensity from sub-Antarctic Marion Island using diatom and geochemical proxies and compare it with paleoclimate records and recent instrumental data. During cool periods, such as the Little Ice Age (c. 1400-1870 CE), the winds weakened and shifted towards the equator, and during warm periods they intensified and migrated poleward. These results imply that changes in the latitudinal temperature gradient drive century-scale SHW migrations, and that intensification of impacts can be anticipated in the coming century. Warmer periods correspond with poleward migration of the Southern Hemisphere westerly winds over the past 700 years and vice versa, according to multi-proxy records from a lake sediment core on sub-Antarctic Marion Island. |
format |
Article in Journal/Newspaper |
author |
Perren, Bianca B. Hodgson, Dominic A. Roberts, Stephen J. Sime, Louise Van Nieuwenhuyze, Wim Verleyen, Elie Vyverman, Wim |
author_facet |
Perren, Bianca B. Hodgson, Dominic A. Roberts, Stephen J. Sime, Louise Van Nieuwenhuyze, Wim Verleyen, Elie Vyverman, Wim |
author_sort |
Perren, Bianca B. |
title |
Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales |
title_short |
Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales |
title_full |
Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales |
title_fullStr |
Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales |
title_full_unstemmed |
Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales |
title_sort |
southward migration of the southern hemisphere westerly winds corresponds with warming climate over centennial timescales |
publishDate |
2020 |
url |
https://biblio.ugent.be/publication/8734914 http://hdl.handle.net/1854/LU-8734914 https://doi.org/10.1038/s43247-020-00059-6 https://biblio.ugent.be/publication/8734914/file/8750018 |
geographic |
Antarctic Southern Ocean Patagonia |
geographic_facet |
Antarctic Southern Ocean Patagonia |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf Marion Island Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf Marion Island Sea ice Southern Ocean |
op_source |
COMMUNICATIONS EARTH & ENVIRONMENT ISSN: 2662-4435 |
op_relation |
https://biblio.ugent.be/publication/8734914 http://hdl.handle.net/1854/LU-8734914 http://doi.org/10.1038/s43247-020-00059-6 https://biblio.ugent.be/publication/8734914/file/8750018 |
op_rights |
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s43247-020-00059-6 |
container_title |
Communications Earth & Environment |
container_volume |
1 |
container_issue |
1 |
_version_ |
1786216885868560384 |