Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle
International audience The ice sheet-climate interaction as well as the climatic response to orbital parameters and atmospheric CO 2 content are examined in order to drive an ice sheet model throughout an ice age cycle. Feedback processes between ice sheet and atmosphere are analyzed by numerical ex...
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ftccsdartic:oai:HAL:hal-00298176v1 2023-05-15T16:39:33+02:00 Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle Abe-Ouchi, A. Segawa, T. Saito, F. Center for Climate System Research Kashiwa (CCSR) The University of Tokyo (UTokyo) Frontier Research Center for Global Change (FRCGC) Japan Agency for Marine-Earth Science and Technology (JAMSTEC) 2007-02-06 https://hal.archives-ouvertes.fr/hal-00298176 https://hal.archives-ouvertes.fr/hal-00298176/document https://hal.archives-ouvertes.fr/hal-00298176/file/cpd-3-301-2007.pdf en eng HAL CCSD European Geosciences Union (EGU) hal-00298176 https://hal.archives-ouvertes.fr/hal-00298176 https://hal.archives-ouvertes.fr/hal-00298176/document https://hal.archives-ouvertes.fr/hal-00298176/file/cpd-3-301-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.archives-ouvertes.fr/hal-00298176 Climate of the Past Discussions, European Geosciences Union (EGU), 2007, 3 (1), pp.301-336 [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 2021-05-22T23:36:34Z International audience The ice sheet-climate interaction as well as the climatic response to orbital parameters and atmospheric CO 2 content are examined in order to drive an ice sheet model throughout an ice age cycle. Feedback processes between ice sheet and atmosphere are analyzed by numerical experiments using a high resolution General Circulation Model (GCM) under different conditions at the Last Glacial Maximum. Among the proposed processes, the ice albedo feedback, the elevation-mass balance feedback and the desertification effect over ice sheet were found to be the dominant processes for the ice-sheet mass balance. The temperature lapse rate over the ice sheet is proposed to be about 5 °C km ?1 , which is weaker than assumed in other studies. Within the plausible range of parameters related to these processes, the ice sheet response to orbital parameters and atmospheric CO 2 content for the last glacial/interglacial cycle was simulated in terms of both ice volume and geographical distribution, using a three-dimensional ice-sheet model. Careful treatment related to climate-ice sheet feedback is essential for a reliable simulation of ice sheet changes during ice age cycles. Article in Journal/Newspaper Ice Sheet Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
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 Abe-Ouchi, A. Segawa, T. Saito, F. Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age 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 The ice sheet-climate interaction as well as the climatic response to orbital parameters and atmospheric CO 2 content are examined in order to drive an ice sheet model throughout an ice age cycle. Feedback processes between ice sheet and atmosphere are analyzed by numerical experiments using a high resolution General Circulation Model (GCM) under different conditions at the Last Glacial Maximum. Among the proposed processes, the ice albedo feedback, the elevation-mass balance feedback and the desertification effect over ice sheet were found to be the dominant processes for the ice-sheet mass balance. The temperature lapse rate over the ice sheet is proposed to be about 5 °C km ?1 , which is weaker than assumed in other studies. Within the plausible range of parameters related to these processes, the ice sheet response to orbital parameters and atmospheric CO 2 content for the last glacial/interglacial cycle was simulated in terms of both ice volume and geographical distribution, using a three-dimensional ice-sheet model. Careful treatment related to climate-ice sheet feedback is essential for a reliable simulation of ice sheet changes during ice age cycles. |
author2 |
Center for Climate System Research Kashiwa (CCSR) The University of Tokyo (UTokyo) Frontier Research Center for Global Change (FRCGC) Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
format |
Article in Journal/Newspaper |
author |
Abe-Ouchi, A. Segawa, T. Saito, F. |
author_facet |
Abe-Ouchi, A. Segawa, T. Saito, F. |
author_sort |
Abe-Ouchi, A. |
title |
Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle |
title_short |
Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle |
title_full |
Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle |
title_fullStr |
Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle |
title_full_unstemmed |
Climatic conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle |
title_sort |
climatic conditions for modelling the northern hemisphere ice sheets throughout the ice age cycle |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00298176 https://hal.archives-ouvertes.fr/hal-00298176/document https://hal.archives-ouvertes.fr/hal-00298176/file/cpd-3-301-2007.pdf |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.archives-ouvertes.fr/hal-00298176 Climate of the Past Discussions, European Geosciences Union (EGU), 2007, 3 (1), pp.301-336 |
op_relation |
hal-00298176 https://hal.archives-ouvertes.fr/hal-00298176 https://hal.archives-ouvertes.fr/hal-00298176/document https://hal.archives-ouvertes.fr/hal-00298176/file/cpd-3-301-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766029885025812480 |