Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP
International audience Predictions of marine ice-sheet behaviour require models that are able to robustly simulate grounding line migration. We present results of an intercomparison exercise for marine ice-sheet models. Verification is effected by comparison with approximate analytical solutions for...
Published in: | The Cryosphere |
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Main Authors: | , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Subjects: | |
Online Access: | https://hal-insu.archives-ouvertes.fr/insu-00844423 https://hal-insu.archives-ouvertes.fr/insu-00844423/document https://hal-insu.archives-ouvertes.fr/insu-00844423/file/tc-6-573-2012.pdf https://doi.org/10.5194/tc-6-573-2012 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Pattyn, F. Schoof, C. Perichon, L. Hindmarsh, R. C. A. Bueler, E. De Fleurian, B. Durand, Geoffroy Gagliardini, O. Gladstone, R. Goldberg, D. Gudmundsson, G. H. Huybrechts, P. Lee, V. Nick, F. M. Payne, A. J. Pollard, D. Rybak, O. Saito, F. Vieli, A. Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Predictions of marine ice-sheet behaviour require models that are able to robustly simulate grounding line migration. We present results of an intercomparison exercise for marine ice-sheet models. Verification is effected by comparison with approximate analytical solutions for flux across the grounding line using simplified geometrical configurations (no lateral variations, no effects of lateral buttressing). Unique steady state grounding line positions exist for ice sheets on a downward sloping bed, while hysteresis occurs across an overdeepened bed, and stable steady state grounding line positions only occur on the downward-sloping sections. Models based on the shallow ice approximation, which does not resolve extensional stresses, do not reproduce the approximate analytical results unless appropriate parameterizations for ice flux are imposed at the grounding line. For extensional-stress resolving "shelfy stream" models, differences between model results were mainly due to the choice of spatial discretization. Moving grid methods were found to be the most accurate at capturing grounding line evolution, since they track the grounding line explicitly. Adaptive mesh refinement can further improve accuracy, including fixed grid models that generally perform poorly at coarse resolution. Fixed grid models, with nested grid representations of the grounding line, are able to generate accurate steady state positions, but can be inaccurate over transients. Only one full- Stokes model was included in the intercomparison, and consequently the accuracy of shelfy stream models as approximations of full-Stokes models remains to be determined in detail, especially during transients. |
author2 |
Laboratoire de Glaciologie Université libre de Bruxelles (ULB) Department of Earth and Ocean Sciences Vancouver University of British Columbia (UBC) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Department of Mathematics and Geophysical Institute University of Alaska Anchorage 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) School of Geographical Sciences Bristol University of Bristol Bristol Courant Institute of Mathematical Sciences New York (CIMS) New York University New York (NYU) NYU System (NYU)-NYU System (NYU) Earth System Sciences & Department of Geography Vrije Universiteit Brussel (VUB) Institute for Marine and Atmospheric Research Utrecht (IMAU) Utrecht University Utrecht Earth and Environmental Systems Institute Pennsylvania State University (Penn State) Penn State System-Penn State System Frontier Research Center for Global Change (FRCGC) Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Department of Geography Durham University IceCube-Dyn European Project: 226375,EC:FP7:ENV,FP7-ENV-2008-1,ICE2SEA(2009) |
format |
Article in Journal/Newspaper |
author |
Pattyn, F. Schoof, C. Perichon, L. Hindmarsh, R. C. A. Bueler, E. De Fleurian, B. Durand, Geoffroy Gagliardini, O. Gladstone, R. Goldberg, D. Gudmundsson, G. H. Huybrechts, P. Lee, V. Nick, F. M. Payne, A. J. Pollard, D. Rybak, O. Saito, F. Vieli, A. |
author_facet |
Pattyn, F. Schoof, C. Perichon, L. Hindmarsh, R. C. A. Bueler, E. De Fleurian, B. Durand, Geoffroy Gagliardini, O. Gladstone, R. Goldberg, D. Gudmundsson, G. H. Huybrechts, P. Lee, V. Nick, F. M. Payne, A. J. Pollard, D. Rybak, O. Saito, F. Vieli, A. |
author_sort |
Pattyn, F. |
title |
Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP |
title_short |
Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP |
title_full |
Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP |
title_fullStr |
Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP |
title_full_unstemmed |
Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP |
title_sort |
results of the marine ice sheet model intercomparison project, mismip |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal-insu.archives-ouvertes.fr/insu-00844423 https://hal-insu.archives-ouvertes.fr/insu-00844423/document https://hal-insu.archives-ouvertes.fr/insu-00844423/file/tc-6-573-2012.pdf https://doi.org/10.5194/tc-6-573-2012 |
genre |
Ice Sheet The Cryosphere |
genre_facet |
Ice Sheet The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal-insu.archives-ouvertes.fr/insu-00844423 The Cryosphere, Copernicus 2012, 6, pp.573- 588. ⟨10.5194/tc-6-573-2012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-6-573-2012 info:eu-repo/grantAgreement/EC/FP7/226375/EU/Ice2sea - estimating the future contribution of continental ice to sea-level rise/ICE2SEA insu-00844423 https://hal-insu.archives-ouvertes.fr/insu-00844423 https://hal-insu.archives-ouvertes.fr/insu-00844423/document https://hal-insu.archives-ouvertes.fr/insu-00844423/file/tc-6-573-2012.pdf doi:10.5194/tc-6-573-2012 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-6-573-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
3 |
container_start_page |
573 |
op_container_end_page |
588 |
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ftccsdartic:oai:HAL:insu-00844423v1 2023-05-15T16:40:22+02:00 Results of the Marine Ice Sheet Model Intercomparison Project, MISMIP Pattyn, F. Schoof, C. Perichon, L. Hindmarsh, R. C. A. Bueler, E. De Fleurian, B. Durand, Geoffroy Gagliardini, O. Gladstone, R. Goldberg, D. Gudmundsson, G. H. Huybrechts, P. Lee, V. Nick, F. M. Payne, A. J. Pollard, D. Rybak, O. Saito, F. Vieli, A. Laboratoire de Glaciologie Université libre de Bruxelles (ULB) Department of Earth and Ocean Sciences Vancouver University of British Columbia (UBC) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Department of Mathematics and Geophysical Institute University of Alaska Anchorage 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) School of Geographical Sciences Bristol University of Bristol Bristol Courant Institute of Mathematical Sciences New York (CIMS) New York University New York (NYU) NYU System (NYU)-NYU System (NYU) Earth System Sciences & Department of Geography Vrije Universiteit Brussel (VUB) Institute for Marine and Atmospheric Research Utrecht (IMAU) Utrecht University Utrecht Earth and Environmental Systems Institute Pennsylvania State University (Penn State) Penn State System-Penn State System Frontier Research Center for Global Change (FRCGC) Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Department of Geography Durham University IceCube-Dyn European Project: 226375,EC:FP7:ENV,FP7-ENV-2008-1,ICE2SEA(2009) 2012-05-30 https://hal-insu.archives-ouvertes.fr/insu-00844423 https://hal-insu.archives-ouvertes.fr/insu-00844423/document https://hal-insu.archives-ouvertes.fr/insu-00844423/file/tc-6-573-2012.pdf https://doi.org/10.5194/tc-6-573-2012 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-6-573-2012 info:eu-repo/grantAgreement/EC/FP7/226375/EU/Ice2sea - estimating the future contribution of continental ice to sea-level rise/ICE2SEA insu-00844423 https://hal-insu.archives-ouvertes.fr/insu-00844423 https://hal-insu.archives-ouvertes.fr/insu-00844423/document https://hal-insu.archives-ouvertes.fr/insu-00844423/file/tc-6-573-2012.pdf doi:10.5194/tc-6-573-2012 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal-insu.archives-ouvertes.fr/insu-00844423 The Cryosphere, Copernicus 2012, 6, pp.573- 588. ⟨10.5194/tc-6-573-2012⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2012 ftccsdartic https://doi.org/10.5194/tc-6-573-2012 2021-10-24T14:50:42Z International audience Predictions of marine ice-sheet behaviour require models that are able to robustly simulate grounding line migration. We present results of an intercomparison exercise for marine ice-sheet models. Verification is effected by comparison with approximate analytical solutions for flux across the grounding line using simplified geometrical configurations (no lateral variations, no effects of lateral buttressing). Unique steady state grounding line positions exist for ice sheets on a downward sloping bed, while hysteresis occurs across an overdeepened bed, and stable steady state grounding line positions only occur on the downward-sloping sections. Models based on the shallow ice approximation, which does not resolve extensional stresses, do not reproduce the approximate analytical results unless appropriate parameterizations for ice flux are imposed at the grounding line. For extensional-stress resolving "shelfy stream" models, differences between model results were mainly due to the choice of spatial discretization. Moving grid methods were found to be the most accurate at capturing grounding line evolution, since they track the grounding line explicitly. Adaptive mesh refinement can further improve accuracy, including fixed grid models that generally perform poorly at coarse resolution. Fixed grid models, with nested grid representations of the grounding line, are able to generate accurate steady state positions, but can be inaccurate over transients. Only one full- Stokes model was included in the intercomparison, and consequently the accuracy of shelfy stream models as approximations of full-Stokes models remains to be determined in detail, especially during transients. Article in Journal/Newspaper Ice Sheet The Cryosphere Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) The Cryosphere 6 3 573 588 |