Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle
International audience A 3-dimensional thermo-mechanical ice-sheet model is used to simulate the evolution of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle. The ice-sheet model is forced by the results from six different atmospheric general circulation models (AGCMs)...
Published in: | Climate of the Past |
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Main Authors: | , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Online Access: | https://hal.archives-ouvertes.fr/hal-00330746 https://hal.archives-ouvertes.fr/hal-00330746/document https://hal.archives-ouvertes.fr/hal-00330746/file/cp-3-15-2007.pdf https://doi.org/10.5194/cp-3-15-2007 |
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English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Charbit, S. Ritz, C. Philippon, G. Peyaud, V. Kageyama, M. Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience A 3-dimensional thermo-mechanical ice-sheet model is used to simulate the evolution of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle. The ice-sheet model is forced by the results from six different atmospheric general circulation models (AGCMs). The climate evolution over the period under study is reconstructed using two climate equilibrium simulations performed for the Last Glacial Maximum (LGM) and for the present-day periods and an interpolation through time between these snapshots using a glacial index calibrated against the GRIP d 18 O record. Since it is driven by the timing of the GRIP signal, the temporal evolution of the ice volume and the ice-covered area is approximately the same from one simulation to the other. However, both ice volume curves and spatial distributions of the ice sheets present some major differences from one AGCM forcing to the other. The origin of these differences, which are most visible in the maximum amplitude of the ice volume, is analyzed in terms of differences in climate forcing. This analysis allows for a partial evaluation of the ability of GCMs to simulate climates consistent with the reconstructions of past ice sheets. Although some models properly reproduce the advance or retreat of ice sheets in some specific areas, none of them is able to reproduce both North American or Eurasian ice complexes in full agreement with observed sea-level variations and geological data. These deviations can be attributed to shortcomings in the climate forcing and in the LGM ice-sheet reconstruction used as a boundary condition for GCM runs, but also to missing processes in the ice-sheet model itself. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Modélisation du climat (CLIM) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Charbit, S. Ritz, C. Philippon, G. Peyaud, V. Kageyama, M. |
author_facet |
Charbit, S. Ritz, C. Philippon, G. Peyaud, V. Kageyama, M. |
author_sort |
Charbit, S. |
title |
Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle |
title_short |
Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle |
title_full |
Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle |
title_fullStr |
Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle |
title_full_unstemmed |
Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle |
title_sort |
numerical reconstructions of the northern hemisphere ice sheets through the last glacial-interglacial cycle |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00330746 https://hal.archives-ouvertes.fr/hal-00330746/document https://hal.archives-ouvertes.fr/hal-00330746/file/cp-3-15-2007.pdf https://doi.org/10.5194/cp-3-15-2007 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.archives-ouvertes.fr/hal-00330746 Climate of the Past, European Geosciences Union (EGU), 2007, 3 (1), pp.15-37. ⟨10.5194/cp-3-15-2007⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-3-15-2007 hal-00330746 https://hal.archives-ouvertes.fr/hal-00330746 https://hal.archives-ouvertes.fr/hal-00330746/document https://hal.archives-ouvertes.fr/hal-00330746/file/cp-3-15-2007.pdf doi:10.5194/cp-3-15-2007 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-3-15-2007 |
container_title |
Climate of the Past |
container_volume |
3 |
container_issue |
1 |
container_start_page |
15 |
op_container_end_page |
37 |
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1766030633269723136 |
spelling |
ftccsdartic:oai:HAL:hal-00330746v1 2023-05-15T16:40:15+02:00 Numerical reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle Charbit, S. Ritz, C. Philippon, G. Peyaud, V. Kageyama, M. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Modélisation du climat (CLIM) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) 2007-01-26 https://hal.archives-ouvertes.fr/hal-00330746 https://hal.archives-ouvertes.fr/hal-00330746/document https://hal.archives-ouvertes.fr/hal-00330746/file/cp-3-15-2007.pdf https://doi.org/10.5194/cp-3-15-2007 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-3-15-2007 hal-00330746 https://hal.archives-ouvertes.fr/hal-00330746 https://hal.archives-ouvertes.fr/hal-00330746/document https://hal.archives-ouvertes.fr/hal-00330746/file/cp-3-15-2007.pdf doi:10.5194/cp-3-15-2007 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.archives-ouvertes.fr/hal-00330746 Climate of the Past, European Geosciences Union (EGU), 2007, 3 (1), pp.15-37. ⟨10.5194/cp-3-15-2007⟩ [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftccsdartic https://doi.org/10.5194/cp-3-15-2007 2021-12-19T04:09:04Z International audience A 3-dimensional thermo-mechanical ice-sheet model is used to simulate the evolution of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle. The ice-sheet model is forced by the results from six different atmospheric general circulation models (AGCMs). The climate evolution over the period under study is reconstructed using two climate equilibrium simulations performed for the Last Glacial Maximum (LGM) and for the present-day periods and an interpolation through time between these snapshots using a glacial index calibrated against the GRIP d 18 O record. Since it is driven by the timing of the GRIP signal, the temporal evolution of the ice volume and the ice-covered area is approximately the same from one simulation to the other. However, both ice volume curves and spatial distributions of the ice sheets present some major differences from one AGCM forcing to the other. The origin of these differences, which are most visible in the maximum amplitude of the ice volume, is analyzed in terms of differences in climate forcing. This analysis allows for a partial evaluation of the ability of GCMs to simulate climates consistent with the reconstructions of past ice sheets. Although some models properly reproduce the advance or retreat of ice sheets in some specific areas, none of them is able to reproduce both North American or Eurasian ice complexes in full agreement with observed sea-level variations and geological data. These deviations can be attributed to shortcomings in the climate forcing and in the LGM ice-sheet reconstruction used as a boundary condition for GCM runs, but also to missing processes in the ice-sheet model itself. Article in Journal/Newspaper Ice Sheet Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Climate of the Past 3 1 15 37 |