Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations
International audience Model drift in the Labrador Sea in eddy permitting model simulations is examined using a series of configurations based on the NEMO numerical framework. There are two phases of the drift that we can identify, beginning with an initial rapid 3-year period, associated with the a...
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Online Access: | https://hal.science/hal-00581665 https://doi.org/10.1016/j.ocemod.2010.06.007 |
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ftunivbrest:oai:HAL:hal-00581665v1 2024-05-19T07:39:37+00:00 Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations Rattan, Sanjay Myers, Paul G. Tréguier, Anne-Marie Theetten, Sebastien Biastoch, Arne Böning, Claus Department of Earth and Atmospheric Sciences Edmonton University of Alberta Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Leibniz-Institut für Meereswissenschaften (IFM-GEOMAR) 2010 https://hal.science/hal-00581665 https://doi.org/10.1016/j.ocemod.2010.06.007 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ocemod.2010.06.007 hal-00581665 https://hal.science/hal-00581665 doi:10.1016/j.ocemod.2010.06.007 ISSN: 1463-5003 Ocean Modelling https://hal.science/hal-00581665 Ocean Modelling, 2010, 35 (4), pp.77-88. ⟨10.1016/j.ocemod.2010.06.007⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2010 ftunivbrest https://doi.org/10.1016/j.ocemod.2010.06.007 2024-05-01T23:48:47Z International audience Model drift in the Labrador Sea in eddy permitting model simulations is examined using a series of configurations based on the NEMO numerical framework. There are two phases of the drift that we can identify, beginning with an initial rapid 3-year period, associated with the adjustment of the model from its initial conditions followed by an extended model drift/adjustment that continued for at least another decade. The drift controlled the model salinity in the Labrador Sea, over-riding the variability. Thus, during this initial period, similar behavior was observed between the inter-annually forced experiments as with perpetual year forcing. The results also did not depend on whether the configuration was global, or regional North Atlantic Ocean. The inclusion of an explicit sea-ice component did not seem to have a significant impact on the interior drift. Clear cut evidence for the drift having an advective nature was shown, based on two separate currents/flow regimes. We find, as expected, the representation of freshwater in the sub-polar gyre's boundary currents important. But this study also points out another, equally important process and pathway: the input of high salinity mode water from the subtropical North Atlantic. The advective regime is dependent on the details of the model, such as the representation of the freshwater transport in the model's East Greenland Current being very sensitive to the strength of the local sea surface salinity restoring (and the underlying field that the model is being restored to). Article in Journal/Newspaper East Greenland east greenland current Greenland Labrador Sea North Atlantic Sea ice Université de Bretagne Occidentale: HAL Ocean Modelling 35 1-2 77 88 |
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Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
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ftunivbrest |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Rattan, Sanjay Myers, Paul G. Tréguier, Anne-Marie Theetten, Sebastien Biastoch, Arne Böning, Claus Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Model drift in the Labrador Sea in eddy permitting model simulations is examined using a series of configurations based on the NEMO numerical framework. There are two phases of the drift that we can identify, beginning with an initial rapid 3-year period, associated with the adjustment of the model from its initial conditions followed by an extended model drift/adjustment that continued for at least another decade. The drift controlled the model salinity in the Labrador Sea, over-riding the variability. Thus, during this initial period, similar behavior was observed between the inter-annually forced experiments as with perpetual year forcing. The results also did not depend on whether the configuration was global, or regional North Atlantic Ocean. The inclusion of an explicit sea-ice component did not seem to have a significant impact on the interior drift. Clear cut evidence for the drift having an advective nature was shown, based on two separate currents/flow regimes. We find, as expected, the representation of freshwater in the sub-polar gyre's boundary currents important. But this study also points out another, equally important process and pathway: the input of high salinity mode water from the subtropical North Atlantic. The advective regime is dependent on the details of the model, such as the representation of the freshwater transport in the model's East Greenland Current being very sensitive to the strength of the local sea surface salinity restoring (and the underlying field that the model is being restored to). |
author2 |
Department of Earth and Atmospheric Sciences Edmonton University of Alberta Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Leibniz-Institut für Meereswissenschaften (IFM-GEOMAR) |
format |
Article in Journal/Newspaper |
author |
Rattan, Sanjay Myers, Paul G. Tréguier, Anne-Marie Theetten, Sebastien Biastoch, Arne Böning, Claus |
author_facet |
Rattan, Sanjay Myers, Paul G. Tréguier, Anne-Marie Theetten, Sebastien Biastoch, Arne Böning, Claus |
author_sort |
Rattan, Sanjay |
title |
Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations |
title_short |
Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations |
title_full |
Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations |
title_fullStr |
Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations |
title_full_unstemmed |
Towards an understanding of Labrador Sea salinity drift in eddy-permitting simulations |
title_sort |
towards an understanding of labrador sea salinity drift in eddy-permitting simulations |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00581665 https://doi.org/10.1016/j.ocemod.2010.06.007 |
genre |
East Greenland east greenland current Greenland Labrador Sea North Atlantic Sea ice |
genre_facet |
East Greenland east greenland current Greenland Labrador Sea North Atlantic Sea ice |
op_source |
ISSN: 1463-5003 Ocean Modelling https://hal.science/hal-00581665 Ocean Modelling, 2010, 35 (4), pp.77-88. ⟨10.1016/j.ocemod.2010.06.007⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ocemod.2010.06.007 hal-00581665 https://hal.science/hal-00581665 doi:10.1016/j.ocemod.2010.06.007 |
op_doi |
https://doi.org/10.1016/j.ocemod.2010.06.007 |
container_title |
Ocean Modelling |
container_volume |
35 |
container_issue |
1-2 |
container_start_page |
77 |
op_container_end_page |
88 |
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1799479191724359680 |