Capabilities and performance of Elmer/Ice, a new-generation ice sheet model
The Fourth IPCC Assessment Report concluded that ice sheet flow models, in their current state, were unable to provide accurate forecast for the increase of polar ice sheet discharge and the associated contribution to sea level rise. Since then, the glaciological community has undertaken a huge effo...
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ftuppsalauniv:oai:DiVA.org:uu-208392 2023-05-15T16:29:55+02:00 Capabilities and performance of Elmer/Ice, a new-generation ice sheet model Gagliardini, O. Zwinger, T. Gillet-Chaulet, F. Durand, G. Favier, L. de Fleurian, B. Greve, R. Malinen, M. Martin, C. Raback, P. Ruokolainen, J. Sacchettini, M. Schafer, M. Seddik, H. Thies, Jonas 2013 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208392 https://doi.org/10.5194/gmd-6-1299-2013 eng eng Matematiska institutionen Geoscientific Model Development, 1991-959X, 2013, 6:4, s. 1299-1318 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208392 doi:10.5194/gmd-6-1299-2013 ISI:000323981100024 info:eu-repo/semantics/openAccess Mathematics Matematik Article in journal info:eu-repo/semantics/article text 2013 ftuppsalauniv https://doi.org/10.5194/gmd-6-1299-2013 2023-02-23T21:57:48Z The Fourth IPCC Assessment Report concluded that ice sheet flow models, in their current state, were unable to provide accurate forecast for the increase of polar ice sheet discharge and the associated contribution to sea level rise. Since then, the glaciological community has undertaken a huge effort to develop and improve a new generation of ice flow models, and as a result a significant number of new ice sheet models have emerged. Among them is the parallel finite-element model Elmer/Ice, based on the open-source multi-physics code Elmer. It was one of the first full-Stokes models used to make projections for the evolution of the whole Greenland ice sheet for the coming two centuries. Originally developed to solve local ice flow problems of high mechanical and physical complexity, Elmer/Ice has today reached the maturity to solve larger-scale problems, earning the status of an ice sheet model. Here, we summarise almost 10 yr of development performed by different groups. Elmer/Ice solves the full-Stokes equations, for isotropic but also anisotropic ice rheology, resolves the grounding line dynamics as a contact problem, and contains various basal friction laws. Derived fields, like the age of the ice, the strain rate or stress, can also be computed. Elmer/Ice includes two recently proposed inverse methods to infer badly known parameters. Elmer is a highly parallelised code thanks to recent developments and the implementation of a block preconditioned solver for the Stokes system. In this paper, all these components are presented in detail, as well as the numerical performance of the Stokes solver and developments planned for the future. Article in Journal/Newspaper Greenland Ice Sheet Uppsala University: Publications (DiVA) Greenland Geoscientific Model Development 6 4 1299 1318 |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Mathematics Matematik |
spellingShingle |
Mathematics Matematik Gagliardini, O. Zwinger, T. Gillet-Chaulet, F. Durand, G. Favier, L. de Fleurian, B. Greve, R. Malinen, M. Martin, C. Raback, P. Ruokolainen, J. Sacchettini, M. Schafer, M. Seddik, H. Thies, Jonas Capabilities and performance of Elmer/Ice, a new-generation ice sheet model |
topic_facet |
Mathematics Matematik |
description |
The Fourth IPCC Assessment Report concluded that ice sheet flow models, in their current state, were unable to provide accurate forecast for the increase of polar ice sheet discharge and the associated contribution to sea level rise. Since then, the glaciological community has undertaken a huge effort to develop and improve a new generation of ice flow models, and as a result a significant number of new ice sheet models have emerged. Among them is the parallel finite-element model Elmer/Ice, based on the open-source multi-physics code Elmer. It was one of the first full-Stokes models used to make projections for the evolution of the whole Greenland ice sheet for the coming two centuries. Originally developed to solve local ice flow problems of high mechanical and physical complexity, Elmer/Ice has today reached the maturity to solve larger-scale problems, earning the status of an ice sheet model. Here, we summarise almost 10 yr of development performed by different groups. Elmer/Ice solves the full-Stokes equations, for isotropic but also anisotropic ice rheology, resolves the grounding line dynamics as a contact problem, and contains various basal friction laws. Derived fields, like the age of the ice, the strain rate or stress, can also be computed. Elmer/Ice includes two recently proposed inverse methods to infer badly known parameters. Elmer is a highly parallelised code thanks to recent developments and the implementation of a block preconditioned solver for the Stokes system. In this paper, all these components are presented in detail, as well as the numerical performance of the Stokes solver and developments planned for the future. |
format |
Article in Journal/Newspaper |
author |
Gagliardini, O. Zwinger, T. Gillet-Chaulet, F. Durand, G. Favier, L. de Fleurian, B. Greve, R. Malinen, M. Martin, C. Raback, P. Ruokolainen, J. Sacchettini, M. Schafer, M. Seddik, H. Thies, Jonas |
author_facet |
Gagliardini, O. Zwinger, T. Gillet-Chaulet, F. Durand, G. Favier, L. de Fleurian, B. Greve, R. Malinen, M. Martin, C. Raback, P. Ruokolainen, J. Sacchettini, M. Schafer, M. Seddik, H. Thies, Jonas |
author_sort |
Gagliardini, O. |
title |
Capabilities and performance of Elmer/Ice, a new-generation ice sheet model |
title_short |
Capabilities and performance of Elmer/Ice, a new-generation ice sheet model |
title_full |
Capabilities and performance of Elmer/Ice, a new-generation ice sheet model |
title_fullStr |
Capabilities and performance of Elmer/Ice, a new-generation ice sheet model |
title_full_unstemmed |
Capabilities and performance of Elmer/Ice, a new-generation ice sheet model |
title_sort |
capabilities and performance of elmer/ice, a new-generation ice sheet model |
publisher |
Matematiska institutionen |
publishDate |
2013 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208392 https://doi.org/10.5194/gmd-6-1299-2013 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
Geoscientific Model Development, 1991-959X, 2013, 6:4, s. 1299-1318 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208392 doi:10.5194/gmd-6-1299-2013 ISI:000323981100024 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gmd-6-1299-2013 |
container_title |
Geoscientific Model Development |
container_volume |
6 |
container_issue |
4 |
container_start_page |
1299 |
op_container_end_page |
1318 |
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1766019634186682368 |