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...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:4cf4b7c2d1dc4f3ebe437bbfec3a1120 2023-05-15T14:03:45+02:00 Impact of meltwater on high-latitude early Last Interglacial climate E. J. Stone E. Capron D. J. Lunt A. J. Payne J. S. Singarayer P. J. Valdes E. W. Wolff 2016-09-01 https://doi.org/10.5194/cp-12-1919-2016 http://www.clim-past.net/12/1919/2016/cp-12-1919-2016.pdf https://doaj.org/article/4cf4b7c2d1dc4f3ebe437bbfec3a1120 en eng Copernicus Publications 1814-9324 1814-9332 doi:10.5194/cp-12-1919-2016 http://www.clim-past.net/12/1919/2016/cp-12-1919-2016.pdf https://doaj.org/article/4cf4b7c2d1dc4f3ebe437bbfec3a1120 undefined Climate of the Past, Vol 12, Iss 9, Pp 1919-1932 (2016) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.5194/cp-12-1919-2016 2023-01-22T19:23:46Z 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 Unknown Antarctic East Antarctica Southern Ocean West Antarctic Ice Sheet Climate of the Past 12 9 1919 1932 |
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geo envir E. J. Stone E. Capron D. J. Lunt A. J. Payne J. S. Singarayer P. J. Valdes E. W. Wolff Impact of meltwater on high-latitude early Last Interglacial climate |
topic_facet |
geo envir |
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 |
E. J. Stone E. Capron D. J. Lunt A. J. Payne J. S. Singarayer P. J. Valdes E. W. Wolff |
author_facet |
E. J. Stone E. Capron D. J. Lunt A. J. Payne J. S. Singarayer P. J. Valdes E. W. Wolff |
author_sort |
E. J. Stone |
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 |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/cp-12-1919-2016 http://www.clim-past.net/12/1919/2016/cp-12-1919-2016.pdf https://doaj.org/article/4cf4b7c2d1dc4f3ebe437bbfec3a1120 |
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 |
Climate of the Past, Vol 12, Iss 9, Pp 1919-1932 (2016) |
op_relation |
1814-9324 1814-9332 doi:10.5194/cp-12-1919-2016 http://www.clim-past.net/12/1919/2016/cp-12-1919-2016.pdf https://doaj.org/article/4cf4b7c2d1dc4f3ebe437bbfec3a1120 |
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undefined |
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 |
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1766274586433814528 |