Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level
Polar temperatures during the Last Interglacial [LIG; ~129 to 116 thousand years (ka)] were warmer than today, making this time period an important testing ground to better understand how ice sheets respond to warming. However, it remains debated how much and when the Antarctic and Greenland ice she...
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ftpubmed:oai:pubmedcentral.nih.gov:10321746 2023-07-30T03:59:10+02:00 Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level Barnett, Robert L. Austermann, Jacqueline Dyer, Blake Telfer, Matt W. Barlow, Natasha L. M. Boulton, Sarah J. Carr, Andrew S. Creel, Roger C. 2023-07-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10321746/ https://doi.org/10.1126/sciadv.adf0198 en eng American Association for the Advancement of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10321746/ http://dx.doi.org/10.1126/sciadv.adf0198 Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. Sci Adv Earth Environmental Ecological and Space Sciences Text 2023 ftpubmed https://doi.org/10.1126/sciadv.adf0198 2023-07-09T01:10:10Z Polar temperatures during the Last Interglacial [LIG; ~129 to 116 thousand years (ka)] were warmer than today, making this time period an important testing ground to better understand how ice sheets respond to warming. However, it remains debated how much and when the Antarctic and Greenland ice sheets changed during this period. Here, we present a combination of new and existing absolutely dated LIG sea-level observations from Britain, France, and Denmark. Because of glacial isostatic adjustment (GIA), the LIG Greenland ice melt contribution to sea-level change in this region is small, which allows us to constrain Antarctic ice change. We find that the Antarctic contribution to LIG global mean sea level peaked early in the interglacial (before 126 ka), with a maximum contribution of 5.7 m (50th percentile, 3.6 to 8.7 m central 68% probability) before declining. Our results support an asynchronous melt history over the LIG, with an early Antarctic contribution followed by later Greenland Ice Sheet mass loss. Text Antarc* Antarctic Greenland Ice Sheet PubMed Central (PMC) Antarctic Greenland The Antarctic Science Advances 9 27 |
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English |
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Earth Environmental Ecological and Space Sciences |
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Earth Environmental Ecological and Space Sciences Barnett, Robert L. Austermann, Jacqueline Dyer, Blake Telfer, Matt W. Barlow, Natasha L. M. Boulton, Sarah J. Carr, Andrew S. Creel, Roger C. Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level |
topic_facet |
Earth Environmental Ecological and Space Sciences |
description |
Polar temperatures during the Last Interglacial [LIG; ~129 to 116 thousand years (ka)] were warmer than today, making this time period an important testing ground to better understand how ice sheets respond to warming. However, it remains debated how much and when the Antarctic and Greenland ice sheets changed during this period. Here, we present a combination of new and existing absolutely dated LIG sea-level observations from Britain, France, and Denmark. Because of glacial isostatic adjustment (GIA), the LIG Greenland ice melt contribution to sea-level change in this region is small, which allows us to constrain Antarctic ice change. We find that the Antarctic contribution to LIG global mean sea level peaked early in the interglacial (before 126 ka), with a maximum contribution of 5.7 m (50th percentile, 3.6 to 8.7 m central 68% probability) before declining. Our results support an asynchronous melt history over the LIG, with an early Antarctic contribution followed by later Greenland Ice Sheet mass loss. |
format |
Text |
author |
Barnett, Robert L. Austermann, Jacqueline Dyer, Blake Telfer, Matt W. Barlow, Natasha L. M. Boulton, Sarah J. Carr, Andrew S. Creel, Roger C. |
author_facet |
Barnett, Robert L. Austermann, Jacqueline Dyer, Blake Telfer, Matt W. Barlow, Natasha L. M. Boulton, Sarah J. Carr, Andrew S. Creel, Roger C. |
author_sort |
Barnett, Robert L. |
title |
Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level |
title_short |
Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level |
title_full |
Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level |
title_fullStr |
Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level |
title_full_unstemmed |
Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea level |
title_sort |
constraining the contribution of the antarctic ice sheet to last interglacial sea level |
publisher |
American Association for the Advancement of Science |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10321746/ https://doi.org/10.1126/sciadv.adf0198 |
geographic |
Antarctic Greenland The Antarctic |
geographic_facet |
Antarctic Greenland The Antarctic |
genre |
Antarc* Antarctic Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet |
op_source |
Sci Adv |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10321746/ http://dx.doi.org/10.1126/sciadv.adf0198 |
op_rights |
Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
op_doi |
https://doi.org/10.1126/sciadv.adf0198 |
container_title |
Science Advances |
container_volume |
9 |
container_issue |
27 |
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1772809890598748160 |