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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ftnerc:oai:nora.nerc.ac.uk:529121 2023-05-15T13:41:45+02:00 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 2020-12-09 text http://nora.nerc.ac.uk/id/eprint/529121/ https://nora.nerc.ac.uk/id/eprint/529121/1/s43247-020-00059-6.pdf https://www.nature.com/articles/s43247-020-00059-6 en eng Nature Research https://nora.nerc.ac.uk/id/eprint/529121/1/s43247-020-00059-6.pdf Perren, Bianca B. orcid:0000-0001-6089-6468 Hodgson, Dominic A. orcid:0000-0002-3841-3746 Roberts, Stephen J. orcid:0000-0003-3407-9127 Sime, Louise orcid:0000-0002-9093-7926 Van Nieuwenhuyze, Wim; Verleyen, Elie; Vyverman, Wim. 2020 Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales. Communications Earth & Environment, 1, 58. 8, pp. https://doi.org/10.1038/s43247-020-00059-6 <https://doi.org/10.1038/s43247-020-00059-6> cc_by_4 CC-BY Publication - Article PeerReviewed 2020 ftnerc 2023-02-04T19:51:26Z 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. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Marion Island Sea ice Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
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. |
format |
Article in Journal/Newspaper |
author |
Perren, Bianca B. Hodgson, Dominic A. Roberts, Stephen J. Sime, Louise Van Nieuwenhuyze, Wim Verleyen, Elie Vyverman, Wim |
spellingShingle |
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 |
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 |
publisher |
Nature Research |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/529121/ https://nora.nerc.ac.uk/id/eprint/529121/1/s43247-020-00059-6.pdf https://www.nature.com/articles/s43247-020-00059-6 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Ice Shelf Marion Island Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Shelf Marion Island Sea ice Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/529121/1/s43247-020-00059-6.pdf Perren, Bianca B. orcid:0000-0001-6089-6468 Hodgson, Dominic A. orcid:0000-0002-3841-3746 Roberts, Stephen J. orcid:0000-0003-3407-9127 Sime, Louise orcid:0000-0002-9093-7926 Van Nieuwenhuyze, Wim; Verleyen, Elie; Vyverman, Wim. 2020 Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales. Communications Earth & Environment, 1, 58. 8, pp. https://doi.org/10.1038/s43247-020-00059-6 <https://doi.org/10.1038/s43247-020-00059-6> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766157185642921984 |