Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle
A 2.5-dimensional climate model of intermediate complexity, CLIMBER-2, fully coupled with the GREMLINS 3-D thermo-mechanical ice sheet model is used to simulate the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle and to investigate the ice sheets response...
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Copernicus Publications
2009
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ftdoajarticles:oai:doaj.org/article:0948aadc3f7e4e8b88e3b30acc151aaa 2023-05-15T16:40:38+02:00 Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle S. Bonelli S. Charbit M. Kageyama M.-N. Woillez G. Ramstein C. Dumas A. Quiquet 2009-07-01T00:00:00Z https://doaj.org/article/0948aadc3f7e4e8b88e3b30acc151aaa EN eng Copernicus Publications http://www.clim-past.net/5/329/2009/cp-5-329-2009.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 https://doaj.org/article/0948aadc3f7e4e8b88e3b30acc151aaa Climate of the Past, Vol 5, Iss 3, Pp 329-345 (2009) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2009 ftdoajarticles 2022-12-31T00:28:41Z A 2.5-dimensional climate model of intermediate complexity, CLIMBER-2, fully coupled with the GREMLINS 3-D thermo-mechanical ice sheet model is used to simulate the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle and to investigate the ice sheets responses to both insolation and atmospheric CO 2 concentration. This model reproduces the main phases of advance and retreat of Northern Hemisphere ice sheets during the last glacial cycle, although the amplitude of these variations is less pronounced than those based on sea level reconstructions. At the last glacial maximum, the simulated ice volume is 52.5×10 15 m 3 and the spatial distribution of both the American and Eurasian ice complexes is in reasonable agreement with observations, with the exception of the marine parts of these former ice sheets. A set of sensitivity studies has also been performed to assess the sensitivity of the Northern Hemisphere ice sheets to both insolation and atmospheric CO 2 . Our results suggest that the decrease of summer insolation is the main factor responsible for the early build up of the North American ice sheet around 120 kyr BP, in agreement with benthic foraminifera δ 18 O signals. In contrast, low insolation and low atmospheric CO 2 concentration are both necessary to trigger a long-lasting glaciation over Eurasia. Article in Journal/Newspaper Ice Sheet Directory of Open Access Journals: DOAJ Articles |
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 S. Bonelli S. Charbit M. Kageyama M.-N. Woillez G. Ramstein C. Dumas A. Quiquet Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
A 2.5-dimensional climate model of intermediate complexity, CLIMBER-2, fully coupled with the GREMLINS 3-D thermo-mechanical ice sheet model is used to simulate the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle and to investigate the ice sheets responses to both insolation and atmospheric CO 2 concentration. This model reproduces the main phases of advance and retreat of Northern Hemisphere ice sheets during the last glacial cycle, although the amplitude of these variations is less pronounced than those based on sea level reconstructions. At the last glacial maximum, the simulated ice volume is 52.5×10 15 m 3 and the spatial distribution of both the American and Eurasian ice complexes is in reasonable agreement with observations, with the exception of the marine parts of these former ice sheets. A set of sensitivity studies has also been performed to assess the sensitivity of the Northern Hemisphere ice sheets to both insolation and atmospheric CO 2 . Our results suggest that the decrease of summer insolation is the main factor responsible for the early build up of the North American ice sheet around 120 kyr BP, in agreement with benthic foraminifera δ 18 O signals. In contrast, low insolation and low atmospheric CO 2 concentration are both necessary to trigger a long-lasting glaciation over Eurasia. |
format |
Article in Journal/Newspaper |
author |
S. Bonelli S. Charbit M. Kageyama M.-N. Woillez G. Ramstein C. Dumas A. Quiquet |
author_facet |
S. Bonelli S. Charbit M. Kageyama M.-N. Woillez G. Ramstein C. Dumas A. Quiquet |
author_sort |
S. Bonelli |
title |
Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle |
title_short |
Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle |
title_full |
Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle |
title_fullStr |
Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle |
title_full_unstemmed |
Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle |
title_sort |
investigating the evolution of major northern hemisphere ice sheets during the last glacial-interglacial cycle |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doaj.org/article/0948aadc3f7e4e8b88e3b30acc151aaa |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Climate of the Past, Vol 5, Iss 3, Pp 329-345 (2009) |
op_relation |
http://www.clim-past.net/5/329/2009/cp-5-329-2009.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 https://doaj.org/article/0948aadc3f7e4e8b88e3b30acc151aaa |
_version_ |
1766031048194392064 |