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Capabilities and performance of Elmer/Ice, a new-generation ice sheet model


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タイトル: Capabilities and performance of Elmer/Ice, a new-generation ice sheet model
著者: Gagliardini, O. 著作を一覧する
Zwinger, T. 著作を一覧する
Gillet-Chaulet, F. 著作を一覧する
Durand, G. 著作を一覧する
Favier, L. 著作を一覧する
de Fleurian, B. 著作を一覧する
Greve, R. 著作を一覧する
Malinen, M. 著作を一覧する
Martín, C. 著作を一覧する
Råback, P. 著作を一覧する
Ruokolainen, J. 著作を一覧する
Sacchettini, M. 著作を一覧する
Schäfer, M. 著作を一覧する
Seddik, H. 著作を一覧する
Thies, J. 著作を一覧する
発行日: 2013年 8月22日
出版者: Copernicus Publications
誌名: Geoscientific Model Development
巻: 6
号: 4
開始ページ: 1299
終了ページ: 1318
出版社 DOI: 10.5194/gmd-6-1299-2013
抄録: 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.
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: Greve Ralf


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