Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction
Occupying 14% of the world’s surface, the Southern Ocean plays a fundamental role in global climate, ocean circulation, carbon cycling and Antarctic ice-sheet stability. Unfortunately, high interannual variability and a dearth of instrumental observations before the 1950s limits our understanding of...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515555/ https://nora.nerc.ac.uk/id/eprint/515555/1/Turney.pdf http://www.clim-past.net/13/231/2017/ |
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ftnerc:oai:nora.nerc.ac.uk:515555 2023-05-15T13:49:33+02:00 Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction Turney, Chris S. M. Fogwill, Christopher J. Palmer, Jonathan G. van Sebille, Erik Thomas, Zoë McGlone, Matt Richardson, Sarah Wilmshurst, Janet M. Fenwick, Pavla Zunz, Violette Goosse, Hugues Wilson, Kerry-Jayne Carter, Lionel Lipson, Mathew Jones, Richard T. Harsch, Melanie Clark, Graeme Marzinelli, Ezequiel Rogers, Tracey Rainsley, Eleanor Ciasto, Laura Waterman, Stephanie Thomas, Elizabeth R. Visbeck, Martin 2017-03-15 text http://nora.nerc.ac.uk/id/eprint/515555/ https://nora.nerc.ac.uk/id/eprint/515555/1/Turney.pdf http://www.clim-past.net/13/231/2017/ en eng European Geosciences Union https://nora.nerc.ac.uk/id/eprint/515555/1/Turney.pdf Turney, Chris S. M.; Fogwill, Christopher J.; Palmer, Jonathan G.; van Sebille, Erik; Thomas, Zoë; McGlone, Matt; Richardson, Sarah; Wilmshurst, Janet M.; Fenwick, Pavla; Zunz, Violette; Goosse, Hugues; Wilson, Kerry-Jayne; Carter, Lionel; Lipson, Mathew; Jones, Richard T.; Harsch, Melanie; Clark, Graeme; Marzinelli, Ezequiel; Rogers, Tracey; Rainsley, Eleanor; Ciasto, Laura; Waterman, Stephanie; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Visbeck, Martin. 2017 Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction. Climate of the Past, 13 (3). 231-248. https://doi.org/10.5194/cp-13-231-2017 <https://doi.org/10.5194/cp-13-231-2017> cc_by CC-BY Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.5194/cp-13-231-2017 2023-02-04T19:44:05Z Occupying 14% of the world’s surface, the Southern Ocean plays a fundamental role in global climate, ocean circulation, carbon cycling and Antarctic ice-sheet stability. Unfortunately, high interannual variability and a dearth of instrumental observations before the 1950s limits our understanding of how marine-atmosphere-ice domains interact on multi-decadal timescales and the impact of anthropogenic forcing. Here we integrate climate-sensitive tree growth with ocean and atmospheric observations on southwest Pacific subantarctic islands that lie at the boundary of polar and subtropical climates (52–54˚S). Our annually-resolved temperature reconstruction captures regional change since the 1870s and demonstrates a significant increase in variability from the mid-twentieth century, a phenomenon predating the observational record. Climate reanalysis and modelling shows a parallel change in tropical Pacific sea surface temperatures that generate an atmospheric Rossby wave train which propagates across a large part of the Southern Hemisphere during the austral spring and summer. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Austral Pacific Climate of the Past 13 3 231 248 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Occupying 14% of the world’s surface, the Southern Ocean plays a fundamental role in global climate, ocean circulation, carbon cycling and Antarctic ice-sheet stability. Unfortunately, high interannual variability and a dearth of instrumental observations before the 1950s limits our understanding of how marine-atmosphere-ice domains interact on multi-decadal timescales and the impact of anthropogenic forcing. Here we integrate climate-sensitive tree growth with ocean and atmospheric observations on southwest Pacific subantarctic islands that lie at the boundary of polar and subtropical climates (52–54˚S). Our annually-resolved temperature reconstruction captures regional change since the 1870s and demonstrates a significant increase in variability from the mid-twentieth century, a phenomenon predating the observational record. Climate reanalysis and modelling shows a parallel change in tropical Pacific sea surface temperatures that generate an atmospheric Rossby wave train which propagates across a large part of the Southern Hemisphere during the austral spring and summer. |
format |
Article in Journal/Newspaper |
author |
Turney, Chris S. M. Fogwill, Christopher J. Palmer, Jonathan G. van Sebille, Erik Thomas, Zoë McGlone, Matt Richardson, Sarah Wilmshurst, Janet M. Fenwick, Pavla Zunz, Violette Goosse, Hugues Wilson, Kerry-Jayne Carter, Lionel Lipson, Mathew Jones, Richard T. Harsch, Melanie Clark, Graeme Marzinelli, Ezequiel Rogers, Tracey Rainsley, Eleanor Ciasto, Laura Waterman, Stephanie Thomas, Elizabeth R. Visbeck, Martin |
spellingShingle |
Turney, Chris S. M. Fogwill, Christopher J. Palmer, Jonathan G. van Sebille, Erik Thomas, Zoë McGlone, Matt Richardson, Sarah Wilmshurst, Janet M. Fenwick, Pavla Zunz, Violette Goosse, Hugues Wilson, Kerry-Jayne Carter, Lionel Lipson, Mathew Jones, Richard T. Harsch, Melanie Clark, Graeme Marzinelli, Ezequiel Rogers, Tracey Rainsley, Eleanor Ciasto, Laura Waterman, Stephanie Thomas, Elizabeth R. Visbeck, Martin Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction |
author_facet |
Turney, Chris S. M. Fogwill, Christopher J. Palmer, Jonathan G. van Sebille, Erik Thomas, Zoë McGlone, Matt Richardson, Sarah Wilmshurst, Janet M. Fenwick, Pavla Zunz, Violette Goosse, Hugues Wilson, Kerry-Jayne Carter, Lionel Lipson, Mathew Jones, Richard T. Harsch, Melanie Clark, Graeme Marzinelli, Ezequiel Rogers, Tracey Rainsley, Eleanor Ciasto, Laura Waterman, Stephanie Thomas, Elizabeth R. Visbeck, Martin |
author_sort |
Turney, Chris S. M. |
title |
Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction |
title_short |
Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction |
title_full |
Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction |
title_fullStr |
Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction |
title_full_unstemmed |
Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction |
title_sort |
tropical forcing of increased southern ocean climate variability revealed by a 140-year subantarctic temperate reconstruction |
publisher |
European Geosciences Union |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/515555/ https://nora.nerc.ac.uk/id/eprint/515555/1/Turney.pdf http://www.clim-past.net/13/231/2017/ |
geographic |
Antarctic Southern Ocean Austral Pacific |
geographic_facet |
Antarctic Southern Ocean Austral Pacific |
genre |
Antarc* Antarctic Ice Sheet Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/515555/1/Turney.pdf Turney, Chris S. M.; Fogwill, Christopher J.; Palmer, Jonathan G.; van Sebille, Erik; Thomas, Zoë; McGlone, Matt; Richardson, Sarah; Wilmshurst, Janet M.; Fenwick, Pavla; Zunz, Violette; Goosse, Hugues; Wilson, Kerry-Jayne; Carter, Lionel; Lipson, Mathew; Jones, Richard T.; Harsch, Melanie; Clark, Graeme; Marzinelli, Ezequiel; Rogers, Tracey; Rainsley, Eleanor; Ciasto, Laura; Waterman, Stephanie; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Visbeck, Martin. 2017 Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperate reconstruction. Climate of the Past, 13 (3). 231-248. https://doi.org/10.5194/cp-13-231-2017 <https://doi.org/10.5194/cp-13-231-2017> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-13-231-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
3 |
container_start_page |
231 |
op_container_end_page |
248 |
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1766251612280455168 |