Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay
In the north-east Atlantic Ocean, the Bay of Biscay is an intersection between a coastal constrained dynamics (wide continental shelf and shelf break regions) and an eastern boundary circulation system. In this framework, the eddy kinetic energy is 1 order of magnitude lower than in western boundary...
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ftdoajarticles:oai:doaj.org/article:1cd77f41257240d8bdfea3e61e58af7b 2023-05-15T17:38:32+02:00 Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay G. Charria S. Theetten F. Vandermeirsch Ö. Yelekçi N. Audiffren 2017-09-01T00:00:00Z https://doi.org/10.5194/os-13-777-2017 https://doaj.org/article/1cd77f41257240d8bdfea3e61e58af7b EN eng Copernicus Publications https://www.ocean-sci.net/13/777/2017/os-13-777-2017.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-13-777-2017 1812-0784 1812-0792 https://doaj.org/article/1cd77f41257240d8bdfea3e61e58af7b Ocean Science, Vol 13, Pp 777-797 (2017) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2017 ftdoajarticles https://doi.org/10.5194/os-13-777-2017 2022-12-31T01:05:07Z In the north-east Atlantic Ocean, the Bay of Biscay is an intersection between a coastal constrained dynamics (wide continental shelf and shelf break regions) and an eastern boundary circulation system. In this framework, the eddy kinetic energy is 1 order of magnitude lower than in western boundary systems. To explore this coastal complex system, a high-resolution (1 km, 100 vertical sigma layers) model experiment including tidal dynamics over a period of 10 years (2001–2010) has been implemented. The ability of the numerical environment to reproduce main patterns over interannual scales is demonstrated. Based on this experiment, the features of the (sub)mesoscale processes are described in the deep part of the region (i.e. abyssal plain and continental slope). A system with the development of mixed layer instabilities at the end of winter is highlighted. Beyond confirming an observed behaviour of seasonal (sub)mesoscale activity in other regions, the simulated period allows exploring the interannual variability of these structures. A relationship between the winter maximum of mixed layer depth and the intensity of (sub)mesoscale related activity (vertical velocity, relative vorticity) is revealed and can be explained by large-scale atmospheric forcings (e.g. the cold winter in 2005). The first submesoscale-permitting exploration of this 3-D coastal system shows the importance of (sub)mesoscale activity in this region with its evolution implying a potentially significant impact on vertical and horizontal mixing. Article in Journal/Newspaper North East Atlantic Directory of Open Access Journals: DOAJ Articles Ocean Science 13 5 777 797 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 G. Charria S. Theetten F. Vandermeirsch Ö. Yelekçi N. Audiffren Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
In the north-east Atlantic Ocean, the Bay of Biscay is an intersection between a coastal constrained dynamics (wide continental shelf and shelf break regions) and an eastern boundary circulation system. In this framework, the eddy kinetic energy is 1 order of magnitude lower than in western boundary systems. To explore this coastal complex system, a high-resolution (1 km, 100 vertical sigma layers) model experiment including tidal dynamics over a period of 10 years (2001–2010) has been implemented. The ability of the numerical environment to reproduce main patterns over interannual scales is demonstrated. Based on this experiment, the features of the (sub)mesoscale processes are described in the deep part of the region (i.e. abyssal plain and continental slope). A system with the development of mixed layer instabilities at the end of winter is highlighted. Beyond confirming an observed behaviour of seasonal (sub)mesoscale activity in other regions, the simulated period allows exploring the interannual variability of these structures. A relationship between the winter maximum of mixed layer depth and the intensity of (sub)mesoscale related activity (vertical velocity, relative vorticity) is revealed and can be explained by large-scale atmospheric forcings (e.g. the cold winter in 2005). The first submesoscale-permitting exploration of this 3-D coastal system shows the importance of (sub)mesoscale activity in this region with its evolution implying a potentially significant impact on vertical and horizontal mixing. |
format |
Article in Journal/Newspaper |
author |
G. Charria S. Theetten F. Vandermeirsch Ö. Yelekçi N. Audiffren |
author_facet |
G. Charria S. Theetten F. Vandermeirsch Ö. Yelekçi N. Audiffren |
author_sort |
G. Charria |
title |
Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay |
title_short |
Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay |
title_full |
Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay |
title_fullStr |
Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay |
title_full_unstemmed |
Interannual evolution of (sub)mesoscale dynamics in the Bay of Biscay |
title_sort |
interannual evolution of (sub)mesoscale dynamics in the bay of biscay |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/os-13-777-2017 https://doaj.org/article/1cd77f41257240d8bdfea3e61e58af7b |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Ocean Science, Vol 13, Pp 777-797 (2017) |
op_relation |
https://www.ocean-sci.net/13/777/2017/os-13-777-2017.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-13-777-2017 1812-0784 1812-0792 https://doaj.org/article/1cd77f41257240d8bdfea3e61e58af7b |
op_doi |
https://doi.org/10.5194/os-13-777-2017 |
container_title |
Ocean Science |
container_volume |
13 |
container_issue |
5 |
container_start_page |
777 |
op_container_end_page |
797 |
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1766139017530703872 |