Impact of meltwater on high-latitude early Last Interglacial climate
Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and warmer-than-present temperatures in the Southern Ocean and over Antarctica. However, climate model simulations of th...
Published in: | Climate of the Past |
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2016
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Online Access: | https://hdl.handle.net/1983/0a4e0ee9-b54f-4071-aef3-fdeb12c38a3b https://research-information.bris.ac.uk/en/publications/0a4e0ee9-b54f-4071-aef3-fdeb12c38a3b https://doi.org/10.5194/cp-12-1919-2016 https://research-information.bris.ac.uk/ws/files/87461017/cp_12_1919_2016.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/0a4e0ee9-b54f-4071-aef3-fdeb12c38a3b 2024-01-28T10:01:38+01:00 Impact of meltwater on high-latitude early Last Interglacial climate Stone, Emma J Capron, Emilie Lunt, Dan Payne, Tony Singarayer, J.S. Valdes, Paul Wolff, EW 2016-09 application/pdf https://hdl.handle.net/1983/0a4e0ee9-b54f-4071-aef3-fdeb12c38a3b https://research-information.bris.ac.uk/en/publications/0a4e0ee9-b54f-4071-aef3-fdeb12c38a3b https://doi.org/10.5194/cp-12-1919-2016 https://research-information.bris.ac.uk/ws/files/87461017/cp_12_1919_2016.pdf eng eng info:eu-repo/semantics/openAccess Stone , E J , Capron , E , Lunt , D , Payne , T , Singarayer , J S , Valdes , P & Wolff , EW 2016 , ' Impact of meltwater on high-latitude early Last Interglacial climate ' , Climate of the Past , vol. 12 , no. 9 , pp. 1919-1932 . https://doi.org/10.5194/cp-12-1919-2016 article 2016 ftubristolcris https://doi.org/10.5194/cp-12-1919-2016 2024-01-04T23:50:18Z Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and warmer-than-present temperatures in the Southern Ocean and over Antarctica. However, climate model simulations of this period have been unable to reproduce this response, when only orbital and greenhouse gas forcings are considered in a climate model framework. Using a full-complexity general circulation model we perform climate model simulations representative of 130 ka conditions which include a magnitude of freshwater forcing derived from data at this time. We show that this meltwater from the remnant Northern Hemisphere ice sheets during the glacial– interglacial transition produces a modelled climate response similar to the observed colder-than-present temperatures in the North Atlantic at 130 ka and also results in warmer-than present temperatures in the Southern Ocean via the bipolar seesaw mechanism. Further simulations in which the West Antarctic Ice Sheet is also removed lead to warming in East Antarctica and the Southern Ocean but do not appreciably improve the model–data comparison. This integrated model–data approach provides evidence that Northern Hemisphere freshwater forcing is an important player in the evolution of early Last Interglacial climate. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet North Atlantic Southern Ocean University of Bristol: Bristol Research Antarctic East Antarctica Southern Ocean West Antarctic Ice Sheet Climate of the Past 12 9 1919 1932 |
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Open Polar |
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University of Bristol: Bristol Research |
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ftubristolcris |
language |
English |
description |
Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and warmer-than-present temperatures in the Southern Ocean and over Antarctica. However, climate model simulations of this period have been unable to reproduce this response, when only orbital and greenhouse gas forcings are considered in a climate model framework. Using a full-complexity general circulation model we perform climate model simulations representative of 130 ka conditions which include a magnitude of freshwater forcing derived from data at this time. We show that this meltwater from the remnant Northern Hemisphere ice sheets during the glacial– interglacial transition produces a modelled climate response similar to the observed colder-than-present temperatures in the North Atlantic at 130 ka and also results in warmer-than present temperatures in the Southern Ocean via the bipolar seesaw mechanism. Further simulations in which the West Antarctic Ice Sheet is also removed lead to warming in East Antarctica and the Southern Ocean but do not appreciably improve the model–data comparison. This integrated model–data approach provides evidence that Northern Hemisphere freshwater forcing is an important player in the evolution of early Last Interglacial climate. |
format |
Article in Journal/Newspaper |
author |
Stone, Emma J Capron, Emilie Lunt, Dan Payne, Tony Singarayer, J.S. Valdes, Paul Wolff, EW |
spellingShingle |
Stone, Emma J Capron, Emilie Lunt, Dan Payne, Tony Singarayer, J.S. Valdes, Paul Wolff, EW Impact of meltwater on high-latitude early Last Interglacial climate |
author_facet |
Stone, Emma J Capron, Emilie Lunt, Dan Payne, Tony Singarayer, J.S. Valdes, Paul Wolff, EW |
author_sort |
Stone, Emma J |
title |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_short |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_full |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_fullStr |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_full_unstemmed |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_sort |
impact of meltwater on high-latitude early last interglacial climate |
publishDate |
2016 |
url |
https://hdl.handle.net/1983/0a4e0ee9-b54f-4071-aef3-fdeb12c38a3b https://research-information.bris.ac.uk/en/publications/0a4e0ee9-b54f-4071-aef3-fdeb12c38a3b https://doi.org/10.5194/cp-12-1919-2016 https://research-information.bris.ac.uk/ws/files/87461017/cp_12_1919_2016.pdf |
geographic |
Antarctic East Antarctica Southern Ocean West Antarctic Ice Sheet |
geographic_facet |
Antarctic East Antarctica Southern Ocean West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet North Atlantic Southern Ocean |
op_source |
Stone , E J , Capron , E , Lunt , D , Payne , T , Singarayer , J S , Valdes , P & Wolff , EW 2016 , ' Impact of meltwater on high-latitude early Last Interglacial climate ' , Climate of the Past , vol. 12 , no. 9 , pp. 1919-1932 . https://doi.org/10.5194/cp-12-1919-2016 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-12-1919-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
9 |
container_start_page |
1919 |
op_container_end_page |
1932 |
_version_ |
1789326820121772032 |