On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties
Although atmospheric reanalyses are an extremely valuable tool to study the climate of polar regions, they suffer from large uncertainties in these data-poor areas. In this work, we examine how Antarctic sea ice biases in an ocean-sea ice model are related to these forcing uncertainties. Three exper...
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Online Access: | http://hdl.handle.net/2078.1/194019 https://doi.org/10.1007/s00382-017-3972-7 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:194019 2024-05-12T07:56:35+00:00 On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties Barthélemy, Antoine Goosse, Hugues Fichefet, Thierry Lecomte, Olivier UCL - SST/ELI/ELIC - Earth & Climate 2017 http://hdl.handle.net/2078.1/194019 https://doi.org/10.1007/s00382-017-3972-7 eng eng boreal:194019 http://hdl.handle.net/2078.1/194019 doi:10.1007/s00382-017-3972-7 urn:ISSN:0930-7575 urn:EISSN:1432-0894 info:eu-repo/semantics/openAccess Climate Dynamics, , p. 19 p. (2017) Antartic Model Atmospheric forcing Uncertainties Sea ice info:eu-repo/semantics/article 2017 ftunistlouisbrus https://doi.org/10.1007/s00382-017-3972-7 2024-04-18T17:33:06Z Although atmospheric reanalyses are an extremely valuable tool to study the climate of polar regions, they suffer from large uncertainties in these data-poor areas. In this work, we examine how Antarctic sea ice biases in an ocean-sea ice model are related to these forcing uncertainties. Three experiments are conducted in which the NEMOLIM model is driven by different atmospheric forcing sets. The minimum ice extent, the ice motion and the ice thickness are sensitive to the reanalysis chosen to drive the model, while the wintertime ice extent and inner pack concentrations are barely affected. The analysis of sea ice concentration budgets allows identifying the processes leading to differences between the experiments, and also indicates that large and similar errors compared to observations are present in all three cases. Our assessment of the influence of forcing inaccuracies on the simulated Antarctic sea ice allows disentangling two types of model biases: the ones that can be reduced thanks to better atmospheric forcings, and those that would require improvements of the physics of the ice or ocean model. Article in Journal/Newspaper Antarc* Antarctic antartic* Sea ice DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic Climate Dynamics 51 4 1585 1603 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Antartic Model Atmospheric forcing Uncertainties Sea ice |
spellingShingle |
Antartic Model Atmospheric forcing Uncertainties Sea ice Barthélemy, Antoine Goosse, Hugues Fichefet, Thierry Lecomte, Olivier On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties |
topic_facet |
Antartic Model Atmospheric forcing Uncertainties Sea ice |
description |
Although atmospheric reanalyses are an extremely valuable tool to study the climate of polar regions, they suffer from large uncertainties in these data-poor areas. In this work, we examine how Antarctic sea ice biases in an ocean-sea ice model are related to these forcing uncertainties. Three experiments are conducted in which the NEMOLIM model is driven by different atmospheric forcing sets. The minimum ice extent, the ice motion and the ice thickness are sensitive to the reanalysis chosen to drive the model, while the wintertime ice extent and inner pack concentrations are barely affected. The analysis of sea ice concentration budgets allows identifying the processes leading to differences between the experiments, and also indicates that large and similar errors compared to observations are present in all three cases. Our assessment of the influence of forcing inaccuracies on the simulated Antarctic sea ice allows disentangling two types of model biases: the ones that can be reduced thanks to better atmospheric forcings, and those that would require improvements of the physics of the ice or ocean model. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Barthélemy, Antoine Goosse, Hugues Fichefet, Thierry Lecomte, Olivier |
author_facet |
Barthélemy, Antoine Goosse, Hugues Fichefet, Thierry Lecomte, Olivier |
author_sort |
Barthélemy, Antoine |
title |
On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties |
title_short |
On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties |
title_full |
On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties |
title_fullStr |
On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties |
title_full_unstemmed |
On the sensitivity of Antarctic sea ice model biases to atmospheric forcing uncertainties |
title_sort |
on the sensitivity of antarctic sea ice model biases to atmospheric forcing uncertainties |
publishDate |
2017 |
url |
http://hdl.handle.net/2078.1/194019 https://doi.org/10.1007/s00382-017-3972-7 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic antartic* Sea ice |
genre_facet |
Antarc* Antarctic antartic* Sea ice |
op_source |
Climate Dynamics, , p. 19 p. (2017) |
op_relation |
boreal:194019 http://hdl.handle.net/2078.1/194019 doi:10.1007/s00382-017-3972-7 urn:ISSN:0930-7575 urn:EISSN:1432-0894 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00382-017-3972-7 |
container_title |
Climate Dynamics |
container_volume |
51 |
container_issue |
4 |
container_start_page |
1585 |
op_container_end_page |
1603 |
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1798836731524415488 |