The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum
We compare multi-ice core data with δ 18 O model output for the early last interglacial Antarctic sea ice minimum. The spatial pattern of δ 18 O across Antarctica is sensitive to the spatial pattern of sea ice retreat. Local sea ice retreat increases the proportion of winter precipitation, depleting...
Published in: | Geophysical Research Letters |
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2017
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Online Access: | https://hdl.handle.net/1983/921e9cdc-ffdb-415b-ae06-83ba1b3df80a https://research-information.bris.ac.uk/en/publications/921e9cdc-ffdb-415b-ae06-83ba1b3df80a https://doi.org/10.1002/2017GL074594 https://research-information.bris.ac.uk/ws/files/155637495/Holloway_et_al_2017_Geophysical_Research_Letters.pdf http://www.scopus.com/inward/record.url?scp=85033565208&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/921e9cdc-ffdb-415b-ae06-83ba1b3df80a 2024-02-11T09:57:43+01:00 The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum Holloway, Max D. Sime, Louise C. Allen, Claire S. Hillenbrand, Claus Dieter Bunch, Pete Wolff, Eric Valdes, Paul J. 2017-11-16 application/pdf https://hdl.handle.net/1983/921e9cdc-ffdb-415b-ae06-83ba1b3df80a https://research-information.bris.ac.uk/en/publications/921e9cdc-ffdb-415b-ae06-83ba1b3df80a https://doi.org/10.1002/2017GL074594 https://research-information.bris.ac.uk/ws/files/155637495/Holloway_et_al_2017_Geophysical_Research_Letters.pdf http://www.scopus.com/inward/record.url?scp=85033565208&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Holloway , M D , Sime , L C , Allen , C S , Hillenbrand , C D , Bunch , P , Wolff , E & Valdes , P J 2017 , ' The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum ' , Geophysical Research Letters , vol. 44 , no. 21 , pp. 11129-11139 . https://doi.org/10.1002/2017GL074594 128 ka Antarctic ice cores last interglacial sea ice sediment cores article 2017 ftubristolcris https://doi.org/10.1002/2017GL074594 2024-01-18T23:30:56Z We compare multi-ice core data with δ 18 O model output for the early last interglacial Antarctic sea ice minimum. The spatial pattern of δ 18 O across Antarctica is sensitive to the spatial pattern of sea ice retreat. Local sea ice retreat increases the proportion of winter precipitation, depleting δ 18 O at ice core sites. However, retreat also enriches δ 18 O because of the reduced source-to-site distance for atmospheric vapor. The joint overall effect is for δ 18 O to increase as sea ice is reduced. Our data-model comparison indicates a winter sea ice retreat of 67, 59, and 43% relative to preindustrial in the Atlantic, Indian, and Pacific sectors of the Southern Ocean. A compilation of Southern Ocean sea ice proxy data provides weak support for this reconstruction. However, most published marine core sites are located too far north of the 128,000 years B.P. sea ice edge, preventing independent corroboration for this sea ice reconstruction. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Sea ice Southern Ocean University of Bristol: Bristol Research Antarctic Indian Pacific Southern Ocean Geophysical Research Letters 44 21 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
128 ka Antarctic ice cores last interglacial sea ice sediment cores |
spellingShingle |
128 ka Antarctic ice cores last interglacial sea ice sediment cores Holloway, Max D. Sime, Louise C. Allen, Claire S. Hillenbrand, Claus Dieter Bunch, Pete Wolff, Eric Valdes, Paul J. The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum |
topic_facet |
128 ka Antarctic ice cores last interglacial sea ice sediment cores |
description |
We compare multi-ice core data with δ 18 O model output for the early last interglacial Antarctic sea ice minimum. The spatial pattern of δ 18 O across Antarctica is sensitive to the spatial pattern of sea ice retreat. Local sea ice retreat increases the proportion of winter precipitation, depleting δ 18 O at ice core sites. However, retreat also enriches δ 18 O because of the reduced source-to-site distance for atmospheric vapor. The joint overall effect is for δ 18 O to increase as sea ice is reduced. Our data-model comparison indicates a winter sea ice retreat of 67, 59, and 43% relative to preindustrial in the Atlantic, Indian, and Pacific sectors of the Southern Ocean. A compilation of Southern Ocean sea ice proxy data provides weak support for this reconstruction. However, most published marine core sites are located too far north of the 128,000 years B.P. sea ice edge, preventing independent corroboration for this sea ice reconstruction. |
format |
Article in Journal/Newspaper |
author |
Holloway, Max D. Sime, Louise C. Allen, Claire S. Hillenbrand, Claus Dieter Bunch, Pete Wolff, Eric Valdes, Paul J. |
author_facet |
Holloway, Max D. Sime, Louise C. Allen, Claire S. Hillenbrand, Claus Dieter Bunch, Pete Wolff, Eric Valdes, Paul J. |
author_sort |
Holloway, Max D. |
title |
The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum |
title_short |
The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum |
title_full |
The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum |
title_fullStr |
The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum |
title_full_unstemmed |
The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum |
title_sort |
spatial structure of the 128 ka antarctic sea ice minimum |
publishDate |
2017 |
url |
https://hdl.handle.net/1983/921e9cdc-ffdb-415b-ae06-83ba1b3df80a https://research-information.bris.ac.uk/en/publications/921e9cdc-ffdb-415b-ae06-83ba1b3df80a https://doi.org/10.1002/2017GL074594 https://research-information.bris.ac.uk/ws/files/155637495/Holloway_et_al_2017_Geophysical_Research_Letters.pdf http://www.scopus.com/inward/record.url?scp=85033565208&partnerID=8YFLogxK |
geographic |
Antarctic Indian Pacific Southern Ocean |
geographic_facet |
Antarctic Indian Pacific Southern Ocean |
genre |
Antarc* Antarctic Antarctica ice core Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica ice core Sea ice Southern Ocean |
op_source |
Holloway , M D , Sime , L C , Allen , C S , Hillenbrand , C D , Bunch , P , Wolff , E & Valdes , P J 2017 , ' The Spatial Structure of the 128 ka Antarctic Sea Ice Minimum ' , Geophysical Research Letters , vol. 44 , no. 21 , pp. 11129-11139 . https://doi.org/10.1002/2017GL074594 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017GL074594 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
21 |
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1790593265573036032 |