Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea-level
Polar temperatures during the Last Interglacial (LIG; ~129-116 ka) were warmer than today, making this time period an important testing ground to better understand how ice sheets respond to warming. Yet it remains debated how much and when the Antarctic and Greenland ice sheets changed during this p...
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ftleicesterunfig:oai:figshare.com:article/23633943 2023-10-29T02:32:21+01:00 Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea-level RL Barnett J Austermann B Dyer MW Telfer NLM Barlow SJ Boulton Andrew Carr RC Creel 2023-07-05T00:00:00Z https://figshare.com/articles/journal_contribution/Constraining_the_contribution_of_the_Antarctic_Ice_Sheet_to_Last_Interglacial_sea-level/23633943 unknown 2381/23633943.v1 https://figshare.com/articles/journal_contribution/Constraining_the_contribution_of_the_Antarctic_Ice_Sheet_to_Last_Interglacial_sea-level/23633943 CC BY-NC 4.0 Uncategorized Uncategorised value Text Journal contribution 2023 ftleicesterunfig 2023-10-04T23:15:03Z Polar temperatures during the Last Interglacial (LIG; ~129-116 ka) were warmer than today, making this time period an important testing ground to better understand how ice sheets respond to warming. Yet 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 southwest Britain, northern France, and Denmark. Due to 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 melt. Combining data and GIA modelling, we find that the Antarctic contribution to LIG global mean sea level peaked early in the interglacial (prior to 125 ka), with a maximum contribution of 5.6 m (50th percentile, 3.3–8.8 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 Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet University of Leicester: Figshare |
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University of Leicester: Figshare |
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ftleicesterunfig |
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Uncategorized Uncategorised value |
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Uncategorized Uncategorised value RL Barnett J Austermann B Dyer MW Telfer NLM Barlow SJ Boulton Andrew Carr RC Creel Constraining the contribution of the Antarctic Ice Sheet to Last Interglacial sea-level |
topic_facet |
Uncategorized Uncategorised value |
description |
Polar temperatures during the Last Interglacial (LIG; ~129-116 ka) were warmer than today, making this time period an important testing ground to better understand how ice sheets respond to warming. Yet 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 southwest Britain, northern France, and Denmark. Due to 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 melt. Combining data and GIA modelling, we find that the Antarctic contribution to LIG global mean sea level peaked early in the interglacial (prior to 125 ka), with a maximum contribution of 5.6 m (50th percentile, 3.3–8.8 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 |
Article in Journal/Newspaper |
author |
RL Barnett J Austermann B Dyer MW Telfer NLM Barlow SJ Boulton Andrew Carr RC Creel |
author_facet |
RL Barnett J Austermann B Dyer MW Telfer NLM Barlow SJ Boulton Andrew Carr RC Creel |
author_sort |
RL Barnett |
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 |
publishDate |
2023 |
url |
https://figshare.com/articles/journal_contribution/Constraining_the_contribution_of_the_Antarctic_Ice_Sheet_to_Last_Interglacial_sea-level/23633943 |
genre |
Antarc* Antarctic Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet |
op_relation |
2381/23633943.v1 https://figshare.com/articles/journal_contribution/Constraining_the_contribution_of_the_Antarctic_Ice_Sheet_to_Last_Interglacial_sea-level/23633943 |
op_rights |
CC BY-NC 4.0 |
_version_ |
1781053666780774400 |