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...
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Language: | English |
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2012
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ftvliz:oai:oma.vliz.be:238527 2023-05-15T13:54:14+02:00 Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model Barthélemy, A. Goosse, H. Mathiot, P. Fichefet, T. 2012 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=238527 en eng info:eu-repo/semantics/altIdentifier/wos/000302932300004 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.ocemod.2012.03.002 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=238527 info:eu-repo/semantics/restrictedAccess %3Ci%3EOcean+Modelling+48%3C%2Fi%3E%3A+45-54.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.ocemod.2012.03.002%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.ocemod.2012.03.002%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftvliz https://doi.org/10.1016/j.ocemod.2012.03.002 2022-05-01T10:15:52Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic The Antarctic Ocean Modelling |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
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. |
format |
Article in Journal/Newspaper |
author |
Barthélemy, A. Goosse, H. Mathiot, P. Fichefet, T. |
spellingShingle |
Barthélemy, A. Goosse, H. Mathiot, P. Fichefet, T. Inclusion of a katabatic wind correction in a coarse-resolution global coupled climate model |
author_facet |
Barthélemy, A. Goosse, H. Mathiot, P. Fichefet, T. |
author_sort |
Barthélemy, A. |
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://www.vliz.be/nl/open-marien-archief?module=ref&refid=238527 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
%3Ci%3EOcean+Modelling+48%3C%2Fi%3E%3A+45-54.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.ocemod.2012.03.002%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.ocemod.2012.03.002%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000302932300004 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.ocemod.2012.03.002 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=238527 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.ocemod.2012.03.002 |
container_title |
Ocean Modelling |
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1766259921331945472 |