Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model
[1] Simulated sea ice thickness in the ORCA2-LIM coupled sea ice - ocean model is compared with thicknesses from the Antarctic Sea Ice Processes and Climate (ASPeCt) database. We find a qualitative agreement of the large-scale patterns of ice thickness distribution. Regional averages for the various...
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Amer Geophysical Union
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Online Access: | http://hdl.handle.net/2078.1/40054 https://doi.org/10.1029/2003JC002242 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:40054 2024-05-12T07:55:35+00:00 Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model Timmermann, R Worby, A Goosse, Hugues Fichefet, Thierry UCL - SC/PHYS - Département de physique UCL - SST/ELI/ELIC - Earth & Climate 2004 http://hdl.handle.net/2078.1/40054 https://doi.org/10.1029/2003JC002242 eng eng Amer Geophysical Union boreal:40054 http://hdl.handle.net/2078.1/40054 doi:10.1029/2003JC002242 urn:ISSN:0148-0227 Journal of Geophysical Research, Vol. 109, no. C7 (2004) Southern Ocean sea ice thickness ASPeCt info:eu-repo/semantics/article 2004 ftunistlouisbrus https://doi.org/10.1029/2003JC002242 2024-04-18T18:14:53Z [1] Simulated sea ice thickness in the ORCA2-LIM coupled sea ice - ocean model is compared with thicknesses from the Antarctic Sea Ice Processes and Climate (ASPeCt) database. We find a qualitative agreement of the large-scale patterns of ice thickness distribution. Regional averages for the various sectors of the Southern Ocean yield a very good correspondence between observations and model data. Exceptions are the eastern Bellingshausen and northwestern Weddell Seas. A poor representation of the Antarctic Peninsula in the atmospheric forcing data and the related overestimation of westerly winds in this region lead to a spurious accumulation of sea ice on the western side of the peninsula and to an underestimation of sea ice coverage on the eastern side. Since the spatial scale of observations is not comparable to the size of a model grid cell, there is little agreement between individual observations and the corresponding model ice thicknesses. A model analysis of the seasonal and interannual variability indicates that the ASPeCt data underestimate the climatological ice thickness in the central and southern Weddell Sea and the eastern Ross Sea by up to 1 m. Because of a winter bias in the observations an overestimation of similar magnitude is expected in the Bellingshausen Sea. Ice thickness data in most of the Indo-Pacific sector appear to be representative for the long-term climatology. A model estimate of the bias is used to compute a revised distribution of climatological sea ice thickness. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ross Sea Sea ice Southern Ocean Weddell Sea DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Bellingshausen Sea Pacific Weddell Journal of Geophysical Research 109 C7 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Southern Ocean sea ice thickness ASPeCt |
spellingShingle |
Southern Ocean sea ice thickness ASPeCt Timmermann, R Worby, A Goosse, Hugues Fichefet, Thierry Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model |
topic_facet |
Southern Ocean sea ice thickness ASPeCt |
description |
[1] Simulated sea ice thickness in the ORCA2-LIM coupled sea ice - ocean model is compared with thicknesses from the Antarctic Sea Ice Processes and Climate (ASPeCt) database. We find a qualitative agreement of the large-scale patterns of ice thickness distribution. Regional averages for the various sectors of the Southern Ocean yield a very good correspondence between observations and model data. Exceptions are the eastern Bellingshausen and northwestern Weddell Seas. A poor representation of the Antarctic Peninsula in the atmospheric forcing data and the related overestimation of westerly winds in this region lead to a spurious accumulation of sea ice on the western side of the peninsula and to an underestimation of sea ice coverage on the eastern side. Since the spatial scale of observations is not comparable to the size of a model grid cell, there is little agreement between individual observations and the corresponding model ice thicknesses. A model analysis of the seasonal and interannual variability indicates that the ASPeCt data underestimate the climatological ice thickness in the central and southern Weddell Sea and the eastern Ross Sea by up to 1 m. Because of a winter bias in the observations an overestimation of similar magnitude is expected in the Bellingshausen Sea. Ice thickness data in most of the Indo-Pacific sector appear to be representative for the long-term climatology. A model estimate of the bias is used to compute a revised distribution of climatological sea ice thickness. |
author2 |
UCL - SC/PHYS - Département de physique UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Timmermann, R Worby, A Goosse, Hugues Fichefet, Thierry |
author_facet |
Timmermann, R Worby, A Goosse, Hugues Fichefet, Thierry |
author_sort |
Timmermann, R |
title |
Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model |
title_short |
Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model |
title_full |
Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model |
title_fullStr |
Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model |
title_full_unstemmed |
Utilizing the ASPeCt sea ice thickness data set to evaluate a global coupled sea ice-ocean model |
title_sort |
utilizing the aspect sea ice thickness data set to evaluate a global coupled sea ice-ocean model |
publisher |
Amer Geophysical Union |
publishDate |
2004 |
url |
http://hdl.handle.net/2078.1/40054 https://doi.org/10.1029/2003JC002242 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Bellingshausen Sea Pacific Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Bellingshausen Sea Pacific Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ross Sea Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ross Sea Sea ice Southern Ocean Weddell Sea |
op_source |
Journal of Geophysical Research, Vol. 109, no. C7 (2004) |
op_relation |
boreal:40054 http://hdl.handle.net/2078.1/40054 doi:10.1029/2003JC002242 urn:ISSN:0148-0227 |
op_doi |
https://doi.org/10.1029/2003JC002242 |
container_title |
Journal of Geophysical Research |
container_volume |
109 |
container_issue |
C7 |
_version_ |
1798835399304413184 |