Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian
During the last interglacial period (Eemian, 130–115 kyr BP) eustatic global sea level likely peaked at > 6 m above the present-day level, but estimates of the contribution of the Greenland Ice Sheet vary widely. Here we use an asynchronously two-way-coupled regional climate–ice-sheet model, whic...
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ftdoajarticles:oai:doaj.org/article:bc96c29247564bcb85ab4226dbd434cb 2023-05-15T13:58:49+02:00 Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian M. M. Helsen W. J. van de Berg R. S. W. van de Wal M. R. van den Broeke J. Oerlemans 2013-08-01T00:00:00Z https://doi.org/10.5194/cp-9-1773-2013 https://doaj.org/article/bc96c29247564bcb85ab4226dbd434cb EN eng Copernicus Publications http://www.clim-past.net/9/1773/2013/cp-9-1773-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-1773-2013 1814-9324 1814-9332 https://doaj.org/article/bc96c29247564bcb85ab4226dbd434cb Climate of the Past, Vol 9, Iss 4, Pp 1773-1788 (2013) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2013 ftdoajarticles https://doi.org/10.5194/cp-9-1773-2013 2022-12-31T10:49:53Z During the last interglacial period (Eemian, 130–115 kyr BP) eustatic global sea level likely peaked at > 6 m above the present-day level, but estimates of the contribution of the Greenland Ice Sheet vary widely. Here we use an asynchronously two-way-coupled regional climate–ice-sheet model, which includes physically realistic feedbacks between the changing ice sheet topography and climate forcing. Our simulation results in a contribution from the Greenland Ice Sheet to the Eemian sea level highstand between 1.2 and 3.5 m, with a most likely value of 2.1 m. Simulated Eemian ice loss in Greenland is dominated by the rapid retreat of the southwestern margin; two-thirds of the ice loss occurred south of 70° N. The southern dome survived the Eemian and remained connected to the central dome. Large-scale ice sheet retreat is prevented in areas with high accumulation. Our results broadly agree with ice-core-inferred elevation changes and marine records, but it does not match with the ice-core-derived temperature record from northern Greenland. During maximum Eemian summertime insolation, Greenland mass loss contributed ~ 0.5 m kyr −1 to sea level rise, 24% of the reconstructed total rate of sea level rise. Next to that, a difference of > 3 m remains between our maximum estimate of the Greenland contribution and the reconstructed minimum value of the global eustatic Eemian highstand. Hence, the Antarctic Ice Sheet must also have contributed significantly to this sea level highstand. Article in Journal/Newspaper Antarc* Antarctic Greenland ice core Ice Sheet Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Greenland Climate of the Past 9 4 1773 1788 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 M. M. Helsen W. J. van de Berg R. S. W. van de Wal M. R. van den Broeke J. Oerlemans Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
During the last interglacial period (Eemian, 130–115 kyr BP) eustatic global sea level likely peaked at > 6 m above the present-day level, but estimates of the contribution of the Greenland Ice Sheet vary widely. Here we use an asynchronously two-way-coupled regional climate–ice-sheet model, which includes physically realistic feedbacks between the changing ice sheet topography and climate forcing. Our simulation results in a contribution from the Greenland Ice Sheet to the Eemian sea level highstand between 1.2 and 3.5 m, with a most likely value of 2.1 m. Simulated Eemian ice loss in Greenland is dominated by the rapid retreat of the southwestern margin; two-thirds of the ice loss occurred south of 70° N. The southern dome survived the Eemian and remained connected to the central dome. Large-scale ice sheet retreat is prevented in areas with high accumulation. Our results broadly agree with ice-core-inferred elevation changes and marine records, but it does not match with the ice-core-derived temperature record from northern Greenland. During maximum Eemian summertime insolation, Greenland mass loss contributed ~ 0.5 m kyr −1 to sea level rise, 24% of the reconstructed total rate of sea level rise. Next to that, a difference of > 3 m remains between our maximum estimate of the Greenland contribution and the reconstructed minimum value of the global eustatic Eemian highstand. Hence, the Antarctic Ice Sheet must also have contributed significantly to this sea level highstand. |
format |
Article in Journal/Newspaper |
author |
M. M. Helsen W. J. van de Berg R. S. W. van de Wal M. R. van den Broeke J. Oerlemans |
author_facet |
M. M. Helsen W. J. van de Berg R. S. W. van de Wal M. R. van den Broeke J. Oerlemans |
author_sort |
M. M. Helsen |
title |
Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian |
title_short |
Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian |
title_full |
Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian |
title_fullStr |
Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian |
title_full_unstemmed |
Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian |
title_sort |
coupled regional climate–ice-sheet simulation shows limited greenland ice loss during the eemian |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/cp-9-1773-2013 https://doaj.org/article/bc96c29247564bcb85ab4226dbd434cb |
geographic |
Antarctic The Antarctic Greenland |
geographic_facet |
Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Greenland ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Greenland ice core Ice Sheet |
op_source |
Climate of the Past, Vol 9, Iss 4, Pp 1773-1788 (2013) |
op_relation |
http://www.clim-past.net/9/1773/2013/cp-9-1773-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-1773-2013 1814-9324 1814-9332 https://doaj.org/article/bc96c29247564bcb85ab4226dbd434cb |
op_doi |
https://doi.org/10.5194/cp-9-1773-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
4 |
container_start_page |
1773 |
op_container_end_page |
1788 |
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1766267176734425088 |