On the formulation of snow thermal conductivity in large-scale sea ice models
An assessment of the performance of a state-of-the-art large-scale coupled sea iceocean model, including a new snow multilayer thermodynamic scheme, is performed. Four 29 year long simulations are compared against each other and against sea ice thickness and extent observations. Each simulation uses...
Published in: | Journal of Advances in Modeling Earth Systems |
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Language: | English |
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Wiley-Blackwell Publishing, Inc.
2013
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Online Access: | http://hdl.handle.net/2078.1/135798 https://doi.org/10.1002/jame.20039 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:135798 2024-05-12T07:59:45+00:00 On the formulation of snow thermal conductivity in large-scale sea ice models Lecomte, Olivier Fichefet, Thierry Vancoppenolle, Martin Massonnet, François Barriat, Pierre-Yves UCL - SST/ELI/ELIC - Earth & Climate 2013 http://hdl.handle.net/2078.1/135798 https://doi.org/10.1002/jame.20039 eng eng Wiley-Blackwell Publishing, Inc. boreal:135798 http://hdl.handle.net/2078.1/135798 doi:10.1002/jame.20039 urn:ISSN:1942-2466 urn:EISSN:1942-2466 info:eu-repo/semantics/restrictedAccess Journal of Advances in Modeling Earth Systems, Vol. 5, p. 542-557 (2013) CISM:CECI 1443 info:eu-repo/semantics/article 2013 ftunistlouisbrus https://doi.org/10.1002/jame.20039 2024-04-18T17:58:57Z An assessment of the performance of a state-of-the-art large-scale coupled sea iceocean model, including a new snow multilayer thermodynamic scheme, is performed. Four 29 year long simulations are compared against each other and against sea ice thickness and extent observations. Each simulation uses a separate parameterization for snow thermophysical properties. The first simulation uses a constant thermal conductivity and prescribed density profiles. The second and third parameterizations use typical power-law relationships linking thermal conductivity directly to density (prescribed as in the first simulation). The fourth parameterization is newly developed and consists of a set of two linear equations relating the snow thermal conductivity and density to the mean seasonal wind speed. Results show that simulation 1 leads to a significant overestimation of the sea ice thickness due to overestimated thermal conductivity, particularly in the Northern Hemisphere. Parameterizations 2 and 4 lead to a realistic simulation of the Arctic sea ice mean state. Simulation 3 results in the underestimation of the sea ice basal growth in both hemispheres, but is partly compensated by lateral growth and snow ice formation in the Southern Hemisphere. Finally, parameterization 4 improves the simulated Snow Depth Distributions by including snow packing by wind, and shows potential for being used in future works. The intercomparison of all simulations suggests that the sea ice model is more sensitive to the snow representation in the Arctic than it is in the Southern Ocean, where the sea ice thickness is not driven by temperature profiles in the snow. Article in Journal/Newspaper Arctic Sea ice Southern Ocean DIAL@USL-B (Université Saint-Louis, Bruxelles) Arctic Southern Ocean Journal of Advances in Modeling Earth Systems 5 3 542 557 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
CISM:CECI 1443 |
spellingShingle |
CISM:CECI 1443 Lecomte, Olivier Fichefet, Thierry Vancoppenolle, Martin Massonnet, François Barriat, Pierre-Yves On the formulation of snow thermal conductivity in large-scale sea ice models |
topic_facet |
CISM:CECI 1443 |
description |
An assessment of the performance of a state-of-the-art large-scale coupled sea iceocean model, including a new snow multilayer thermodynamic scheme, is performed. Four 29 year long simulations are compared against each other and against sea ice thickness and extent observations. Each simulation uses a separate parameterization for snow thermophysical properties. The first simulation uses a constant thermal conductivity and prescribed density profiles. The second and third parameterizations use typical power-law relationships linking thermal conductivity directly to density (prescribed as in the first simulation). The fourth parameterization is newly developed and consists of a set of two linear equations relating the snow thermal conductivity and density to the mean seasonal wind speed. Results show that simulation 1 leads to a significant overestimation of the sea ice thickness due to overestimated thermal conductivity, particularly in the Northern Hemisphere. Parameterizations 2 and 4 lead to a realistic simulation of the Arctic sea ice mean state. Simulation 3 results in the underestimation of the sea ice basal growth in both hemispheres, but is partly compensated by lateral growth and snow ice formation in the Southern Hemisphere. Finally, parameterization 4 improves the simulated Snow Depth Distributions by including snow packing by wind, and shows potential for being used in future works. The intercomparison of all simulations suggests that the sea ice model is more sensitive to the snow representation in the Arctic than it is in the Southern Ocean, where the sea ice thickness is not driven by temperature profiles in the snow. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Lecomte, Olivier Fichefet, Thierry Vancoppenolle, Martin Massonnet, François Barriat, Pierre-Yves |
author_facet |
Lecomte, Olivier Fichefet, Thierry Vancoppenolle, Martin Massonnet, François Barriat, Pierre-Yves |
author_sort |
Lecomte, Olivier |
title |
On the formulation of snow thermal conductivity in large-scale sea ice models |
title_short |
On the formulation of snow thermal conductivity in large-scale sea ice models |
title_full |
On the formulation of snow thermal conductivity in large-scale sea ice models |
title_fullStr |
On the formulation of snow thermal conductivity in large-scale sea ice models |
title_full_unstemmed |
On the formulation of snow thermal conductivity in large-scale sea ice models |
title_sort |
on the formulation of snow thermal conductivity in large-scale sea ice models |
publisher |
Wiley-Blackwell Publishing, Inc. |
publishDate |
2013 |
url |
http://hdl.handle.net/2078.1/135798 https://doi.org/10.1002/jame.20039 |
geographic |
Arctic Southern Ocean |
geographic_facet |
Arctic Southern Ocean |
genre |
Arctic Sea ice Southern Ocean |
genre_facet |
Arctic Sea ice Southern Ocean |
op_source |
Journal of Advances in Modeling Earth Systems, Vol. 5, p. 542-557 (2013) |
op_relation |
boreal:135798 http://hdl.handle.net/2078.1/135798 doi:10.1002/jame.20039 urn:ISSN:1942-2466 urn:EISSN:1942-2466 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/jame.20039 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
5 |
container_issue |
3 |
container_start_page |
542 |
op_container_end_page |
557 |
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1798841346148007936 |