Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy
International audience Polar ice cores can provide both a record of climate history and a sharp test of the performance of numerical ice dynamics models. The stratigraphic structure of an ice sheet is an expression of its full depositional and dynamic history and thus presents a greater challenge to...
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-00373797 https://doi.org/10.1016/j.quascirev.2004.08.021 |
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ftccsdartic:oai:HAL:insu-00373797v1 2023-05-15T16:24:43+02:00 Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy Clarke, Garry K. C. Lhomme, N. Marshall, Shawn J. Earth and Ocean Sciences University of British Columbia (UBC) 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) Department of Geography Calgary University of Calgary 2005 https://hal-insu.archives-ouvertes.fr/insu-00373797 https://doi.org/10.1016/j.quascirev.2004.08.021 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2004.08.021 insu-00373797 https://hal-insu.archives-ouvertes.fr/insu-00373797 doi:10.1016/j.quascirev.2004.08.021 ISSN: 0277-3791 Quaternary Science Reviews https://hal-insu.archives-ouvertes.fr/insu-00373797 Quaternary Science Reviews, Elsevier, 2005, 24 (1-2), pp.155 à 171. ⟨10.1016/j.quascirev.2004.08.021⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2005 ftccsdartic https://doi.org/10.1016/j.quascirev.2004.08.021 2021-10-24T20:09:07Z International audience Polar ice cores can provide both a record of climate history and a sharp test of the performance of numerical ice dynamics models. The stratigraphic structure of an ice sheet is an expression of its full depositional and dynamic history and thus presents a greater challenge to computer models than merely matching the contemporary ice thickness and areal extent. We describe a coupled model of ice and tracer dynamics that is realized by adding a semi-Lagrangian tracer transport scheme to a conventional thermomechanical ice dynamics model. Model skill is demonstrated by using ice core data from the GRIP site near Summit Greenland to successfully predict the isotopic stratigraphy of ice cores at other deep drilling sites. The success of this effort indicates that, when compensated for the effects of ice flow and elevation, all the deep cores relate a coherent glacial history over the past 120,000 years. According to the simulation results, the oldest Greenland ice lies beneath the GRIP, GISP2 and NorthGRIP sites although comparably old ice may also be found in North Greenland and East Central Greenland. Article in Journal/Newspaper Greenland GRIP ice core Ice Sheet North Greenland Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Greenland Quaternary Science Reviews 24 1-2 155 171 |
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.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Clarke, Garry K. C. Lhomme, N. Marshall, Shawn J. Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Polar ice cores can provide both a record of climate history and a sharp test of the performance of numerical ice dynamics models. The stratigraphic structure of an ice sheet is an expression of its full depositional and dynamic history and thus presents a greater challenge to computer models than merely matching the contemporary ice thickness and areal extent. We describe a coupled model of ice and tracer dynamics that is realized by adding a semi-Lagrangian tracer transport scheme to a conventional thermomechanical ice dynamics model. Model skill is demonstrated by using ice core data from the GRIP site near Summit Greenland to successfully predict the isotopic stratigraphy of ice cores at other deep drilling sites. The success of this effort indicates that, when compensated for the effects of ice flow and elevation, all the deep cores relate a coherent glacial history over the past 120,000 years. According to the simulation results, the oldest Greenland ice lies beneath the GRIP, GISP2 and NorthGRIP sites although comparably old ice may also be found in North Greenland and East Central Greenland. |
author2 |
Earth and Ocean Sciences University of British Columbia (UBC) 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) Department of Geography Calgary University of Calgary |
format |
Article in Journal/Newspaper |
author |
Clarke, Garry K. C. Lhomme, N. Marshall, Shawn J. |
author_facet |
Clarke, Garry K. C. Lhomme, N. Marshall, Shawn J. |
author_sort |
Clarke, Garry K. C. |
title |
Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy |
title_short |
Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy |
title_full |
Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy |
title_fullStr |
Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy |
title_full_unstemmed |
Tracer transport in the Greenland ice sheet: three-dimensional isotopic stratigraphy |
title_sort |
tracer transport in the greenland ice sheet: three-dimensional isotopic stratigraphy |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal-insu.archives-ouvertes.fr/insu-00373797 https://doi.org/10.1016/j.quascirev.2004.08.021 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland GRIP ice core Ice Sheet North Greenland |
genre_facet |
Greenland GRIP ice core Ice Sheet North Greenland |
op_source |
ISSN: 0277-3791 Quaternary Science Reviews https://hal-insu.archives-ouvertes.fr/insu-00373797 Quaternary Science Reviews, Elsevier, 2005, 24 (1-2), pp.155 à 171. ⟨10.1016/j.quascirev.2004.08.021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2004.08.021 insu-00373797 https://hal-insu.archives-ouvertes.fr/insu-00373797 doi:10.1016/j.quascirev.2004.08.021 |
op_doi |
https://doi.org/10.1016/j.quascirev.2004.08.021 |
container_title |
Quaternary Science Reviews |
container_volume |
24 |
container_issue |
1-2 |
container_start_page |
155 |
op_container_end_page |
171 |
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1766013275851456512 |