Southward migration of the Southern Hemisphere westerly winds corresponds with warming climate over centennial timescales
Abstract 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...
Published in: | Communications Earth & Environment |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1038/s43247-020-00059-6 http://www.nature.com/articles/s43247-020-00059-6.pdf http://www.nature.com/articles/s43247-020-00059-6 |
id |
crspringernat:10.1038/s43247-020-00059-6 |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1038/s43247-020-00059-6 2023-05-15T14:06:57+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 http://dx.doi.org/10.1038/s43247-020-00059-6 http://www.nature.com/articles/s43247-020-00059-6.pdf http://www.nature.com/articles/s43247-020-00059-6 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Communications Earth & Environment volume 1, issue 1 ISSN 2662-4435 General Earth and Planetary Sciences General Environmental Science journal-article 2020 crspringernat https://doi.org/10.1038/s43247-020-00059-6 2022-01-14T15:41:39Z Abstract 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 Springer Nature (via Crossref) Antarctic Southern Ocean Communications Earth & Environment 1 1 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Earth and Planetary Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Environmental Science 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 |
General Earth and Planetary Sciences General Environmental Science |
description |
Abstract 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 |
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 |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s43247-020-00059-6 http://www.nature.com/articles/s43247-020-00059-6.pdf http://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_source |
Communications Earth & Environment volume 1, issue 1 ISSN 2662-4435 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s43247-020-00059-6 |
container_title |
Communications Earth & Environment |
container_volume |
1 |
container_issue |
1 |
_version_ |
1766278946687549440 |