Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS
In order to model the thermal structure of polythermal ice sheets accurately, energy-conserving schemes and correct tracking of the coldetemperate transition surface (CTS) are necessary. We compare four different thermodynamics solvers in the ice sheet model SICOPOLIS. Two exist already, namely a tw...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/68069 2023-11-05T03:42:41+01:00 Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS Greve, Ralf Blatter, Heinz http://hdl.handle.net/2115/68069 https://doi.org/10.1016/j.polar.2015.12.004 eng eng Elsevier http://hdl.handle.net/2115/68069 Polar Science, 10(1): 11-23 http://dx.doi.org/10.1016/j.polar.2015.12.004 ©2016, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ Ice sheet Thermodynamics Polythermal ice Enthalpy method Modeling article (author version) fthokunivhus https://doi.org/10.1016/j.polar.2015.12.004 2023-10-06T00:06:41Z In order to model the thermal structure of polythermal ice sheets accurately, energy-conserving schemes and correct tracking of the coldetemperate transition surface (CTS) are necessary. We compare four different thermodynamics solvers in the ice sheet model SICOPOLIS. Two exist already, namely a twolayer polythermal scheme (POLY) and a single-phase cold-ice scheme (COLD), while the other two are newly-implemented, one-layer enthalpy schemes, namely a conventional scheme (ENTC) and a meltingCTS scheme (ENTM). The comparison uses scenarios of the EISMINT Phase 2 Simplified Geometry Experiments (Payne et al., 2000, J. Glaciol. 46, 227-238). The POLY scheme is used as a reference against which the performance of the other schemes is tested. Both the COLD scheme and the ENTC scheme fail to produce a continuous temperature gradient across the CTS, which is explicitly enforced by the ENTM scheme. ENTM is more precise than ENTC for determining the position of the CTS, while the performance of both schemes is good for the temperature/water-content profiles in the entire ice column. Therefore, the one-layer enthalpy schemes ENTC and ENTM are viable, easier implementable alternatives to the POLY scheme with its need to handle two different numerical domains for cold and temperate ice. (C) 2016 Elsevier B.V. and NIPR. All rights reserved. Article in Journal/Newspaper Ice Sheet Polar Science Polar Science Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Polar Science 10 1 11 23 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Ice sheet Thermodynamics Polythermal ice Enthalpy method Modeling |
spellingShingle |
Ice sheet Thermodynamics Polythermal ice Enthalpy method Modeling Greve, Ralf Blatter, Heinz Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS |
topic_facet |
Ice sheet Thermodynamics Polythermal ice Enthalpy method Modeling |
description |
In order to model the thermal structure of polythermal ice sheets accurately, energy-conserving schemes and correct tracking of the coldetemperate transition surface (CTS) are necessary. We compare four different thermodynamics solvers in the ice sheet model SICOPOLIS. Two exist already, namely a twolayer polythermal scheme (POLY) and a single-phase cold-ice scheme (COLD), while the other two are newly-implemented, one-layer enthalpy schemes, namely a conventional scheme (ENTC) and a meltingCTS scheme (ENTM). The comparison uses scenarios of the EISMINT Phase 2 Simplified Geometry Experiments (Payne et al., 2000, J. Glaciol. 46, 227-238). The POLY scheme is used as a reference against which the performance of the other schemes is tested. Both the COLD scheme and the ENTC scheme fail to produce a continuous temperature gradient across the CTS, which is explicitly enforced by the ENTM scheme. ENTM is more precise than ENTC for determining the position of the CTS, while the performance of both schemes is good for the temperature/water-content profiles in the entire ice column. Therefore, the one-layer enthalpy schemes ENTC and ENTM are viable, easier implementable alternatives to the POLY scheme with its need to handle two different numerical domains for cold and temperate ice. (C) 2016 Elsevier B.V. and NIPR. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Greve, Ralf Blatter, Heinz |
author_facet |
Greve, Ralf Blatter, Heinz |
author_sort |
Greve, Ralf |
title |
Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS |
title_short |
Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS |
title_full |
Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS |
title_fullStr |
Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS |
title_full_unstemmed |
Comparison of thermodynamics solvers in the polythermal ice sheet model SICOPOLIS |
title_sort |
comparison of thermodynamics solvers in the polythermal ice sheet model sicopolis |
publisher |
Elsevier |
url |
http://hdl.handle.net/2115/68069 https://doi.org/10.1016/j.polar.2015.12.004 |
genre |
Ice Sheet Polar Science Polar Science |
genre_facet |
Ice Sheet Polar Science Polar Science |
op_relation |
http://hdl.handle.net/2115/68069 Polar Science, 10(1): 11-23 http://dx.doi.org/10.1016/j.polar.2015.12.004 |
op_rights |
©2016, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1016/j.polar.2015.12.004 |
container_title |
Polar Science |
container_volume |
10 |
container_issue |
1 |
container_start_page |
11 |
op_container_end_page |
23 |
_version_ |
1781700028328312832 |