Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model
A correction for katabatic winds and polar easterlies is developed to deal with their dramatic underestimation by the atmospheric component of a coarse-resolution global coupled climate model. This correction relies on a comparison of the atmospheric surface circulation simulated by the model with t...
Published in: | Ocean Modelling |
---|---|
Main Authors: | , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/2078.1/110441 https://doi.org/10.1016/j.ocemod.2012.03.002 |
id |
ftunistlouisbrus:oai:dial.uclouvain.be:boreal:110441 |
---|---|
record_format |
openpolar |
spelling |
ftunistlouisbrus:oai:dial.uclouvain.be:boreal:110441 2024-05-12T07:54:01+00:00 Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model Barthélemy, Antoine Goosse, Hugues Mathiot, Pierre Fichefet, Thierry UCL - SST/ELI/ELIC - Earth & Climate 2012 http://hdl.handle.net/2078.1/110441 https://doi.org/10.1016/j.ocemod.2012.03.002 eng eng boreal:110441 http://hdl.handle.net/2078.1/110441 doi:10.1016/j.ocemod.2012.03.002 urn:ISSN:1463-5003 info:eu-repo/semantics/restrictedAccess Ocean Modelling, Vol. 48, p. 45-54 (2012) Antarctic Climate model Deep water Katabatic winds Sea ice Southern Ocean 1443 info:eu-repo/semantics/article 2012 ftunistlouisbrus https://doi.org/10.1016/j.ocemod.2012.03.002 2024-04-18T18:05:14Z A correction for katabatic winds and polar easterlies is developed to deal with their dramatic underestimation by the atmospheric component of a coarse-resolution global coupled climate model. This correction relies on a comparison of the atmospheric surface circulation simulated by the model with the one provided by a regional atmospheric model, and consists of wind stress modifications in the vicinity of the Antarctic coast. Corrections are spatially varying and different for both wind components. The impacts of the correction on the modelled Antarctic sea ice and World Ocean's properties on long timescales are assessed, showing that katabatic winds thin sea ice and strongly enhance its production along the continent. Consequently, the formation rate, salinity and temperature of the Antarctic Bottom Water are increased. This leads to model results in better agreement with observations, especially in the deep ocean where the mean errors in temperature and salinity decrease by 9% and 37%, respectively. Hence, correcting katabatic winds seems to be an appropriate way to improve the representation of sea ice-related surface processes around Antarctica. © 2012 Elsevier Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Southern Ocean DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic Southern Ocean The Antarctic Ocean Modelling |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Antarctic Climate model Deep water Katabatic winds Sea ice Southern Ocean 1443 |
spellingShingle |
Antarctic Climate model Deep water Katabatic winds Sea ice Southern Ocean 1443 Barthélemy, Antoine Goosse, Hugues Mathiot, Pierre Fichefet, Thierry Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
topic_facet |
Antarctic Climate model Deep water Katabatic winds Sea ice Southern Ocean 1443 |
description |
A correction for katabatic winds and polar easterlies is developed to deal with their dramatic underestimation by the atmospheric component of a coarse-resolution global coupled climate model. This correction relies on a comparison of the atmospheric surface circulation simulated by the model with the one provided by a regional atmospheric model, and consists of wind stress modifications in the vicinity of the Antarctic coast. Corrections are spatially varying and different for both wind components. The impacts of the correction on the modelled Antarctic sea ice and World Ocean's properties on long timescales are assessed, showing that katabatic winds thin sea ice and strongly enhance its production along the continent. Consequently, the formation rate, salinity and temperature of the Antarctic Bottom Water are increased. This leads to model results in better agreement with observations, especially in the deep ocean where the mean errors in temperature and salinity decrease by 9% and 37%, respectively. Hence, correcting katabatic winds seems to be an appropriate way to improve the representation of sea ice-related surface processes around Antarctica. © 2012 Elsevier Ltd. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Barthélemy, Antoine Goosse, Hugues Mathiot, Pierre Fichefet, Thierry |
author_facet |
Barthélemy, Antoine Goosse, Hugues Mathiot, Pierre Fichefet, Thierry |
author_sort |
Barthélemy, Antoine |
title |
Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
title_short |
Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
title_full |
Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
title_fullStr |
Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
title_full_unstemmed |
Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
title_sort |
inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
publishDate |
2012 |
url |
http://hdl.handle.net/2078.1/110441 https://doi.org/10.1016/j.ocemod.2012.03.002 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
op_source |
Ocean Modelling, Vol. 48, p. 45-54 (2012) |
op_relation |
boreal:110441 http://hdl.handle.net/2078.1/110441 doi:10.1016/j.ocemod.2012.03.002 urn:ISSN:1463-5003 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.ocemod.2012.03.002 |
container_title |
Ocean Modelling |
_version_ |
1798846152776351744 |