Enthalpy benchmark experiments for numerical ice sheet models
We present benchmark experiments to test the implementation of enthalpy and the corresponding boundary conditions in numerical ice sheet models. Since we impose several assumptions on the experiment design, analytical solutions can be formulated for the proposed numerical experiments. The first expe...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00017649 2023-05-15T16:40:24+02:00 Enthalpy benchmark experiments for numerical ice sheet models Kleiner, T. Rückamp, M. Bondzio, J. H. Humbert, A. 2015-02 electronic https://doi.org/10.5194/tc-9-217-2015 https://noa.gwlb.de/receive/cop_mods_00017649 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017604/tc-9-217-2015.pdf https://tc.copernicus.org/articles/9/217/2015/tc-9-217-2015.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-217-2015 https://noa.gwlb.de/receive/cop_mods_00017649 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017604/tc-9-217-2015.pdf https://tc.copernicus.org/articles/9/217/2015/tc-9-217-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/tc-9-217-2015 2022-02-08T22:53:36Z We present benchmark experiments to test the implementation of enthalpy and the corresponding boundary conditions in numerical ice sheet models. Since we impose several assumptions on the experiment design, analytical solutions can be formulated for the proposed numerical experiments. The first experiment tests the functionality of the boundary condition scheme and the basal melt rate calculation during transient simulations. The second experiment addresses the steady-state enthalpy profile and the resulting position of the cold–temperate transition surface (CTS). For both experiments we assume ice flow in a parallel-sided slab decoupled from the thermal regime. We compare simulation results achieved by three different ice flow-models with these analytical solutions. The models agree well to the analytical solutions, if the change in conductivity between cold and temperate ice is properly considered in the model. In particular, the enthalpy gradient on the cold side of the CTS goes to zero in the limit of vanishing temperate-ice conductivity, as required from the physical jump conditions at the CTS. Article in Journal/Newspaper Ice Sheet The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 9 1 217 228 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Kleiner, T. Rückamp, M. Bondzio, J. H. Humbert, A. Enthalpy benchmark experiments for numerical ice sheet models |
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article Verlagsveröffentlichung |
description |
We present benchmark experiments to test the implementation of enthalpy and the corresponding boundary conditions in numerical ice sheet models. Since we impose several assumptions on the experiment design, analytical solutions can be formulated for the proposed numerical experiments. The first experiment tests the functionality of the boundary condition scheme and the basal melt rate calculation during transient simulations. The second experiment addresses the steady-state enthalpy profile and the resulting position of the cold–temperate transition surface (CTS). For both experiments we assume ice flow in a parallel-sided slab decoupled from the thermal regime. We compare simulation results achieved by three different ice flow-models with these analytical solutions. The models agree well to the analytical solutions, if the change in conductivity between cold and temperate ice is properly considered in the model. In particular, the enthalpy gradient on the cold side of the CTS goes to zero in the limit of vanishing temperate-ice conductivity, as required from the physical jump conditions at the CTS. |
format |
Article in Journal/Newspaper |
author |
Kleiner, T. Rückamp, M. Bondzio, J. H. Humbert, A. |
author_facet |
Kleiner, T. Rückamp, M. Bondzio, J. H. Humbert, A. |
author_sort |
Kleiner, T. |
title |
Enthalpy benchmark experiments for numerical ice sheet models |
title_short |
Enthalpy benchmark experiments for numerical ice sheet models |
title_full |
Enthalpy benchmark experiments for numerical ice sheet models |
title_fullStr |
Enthalpy benchmark experiments for numerical ice sheet models |
title_full_unstemmed |
Enthalpy benchmark experiments for numerical ice sheet models |
title_sort |
enthalpy benchmark experiments for numerical ice sheet models |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-217-2015 https://noa.gwlb.de/receive/cop_mods_00017649 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017604/tc-9-217-2015.pdf https://tc.copernicus.org/articles/9/217/2015/tc-9-217-2015.pdf |
genre |
Ice Sheet The Cryosphere |
genre_facet |
Ice Sheet The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-217-2015 https://noa.gwlb.de/receive/cop_mods_00017649 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017604/tc-9-217-2015.pdf https://tc.copernicus.org/articles/9/217/2015/tc-9-217-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-9-217-2015 |
container_title |
The Cryosphere |
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9 |
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1 |
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217 |
op_container_end_page |
228 |
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1766030799190097920 |