Mass transport in the Bay of Biscay from an inverse box model

Mass transports in the Bay of Biscay for thermocline, intermediate and deep water masses are estimated from a box inverse model applied to hydrographic data from a quasi-synoptic survey carried out in August 2005. The model obeys conservation statements for mass in a volume of ocean bounded by 43 fu...

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Authors: Fraile-Nuez, Eugenio, Plaza-Jorge, Francisco, Hernández-Guerra, Alonso, Vargas-Yáñez, Manuel, Lavín, Alicia
Format: article
Publication Date:2008
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/318238
Online Access:http://hdl.handle.net/10261/318238
Access Level:Open access
Keyword:Medio Marino
Centro Oceanográfico de Canarias
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spelling Mass transport in the Bay of Biscay from an inverse box modelFraile-Nuez, EugenioPlaza-Jorge, FranciscoHernández-Guerra, AlonsoVargas-Yáñez, ManuelLavín, AliciaMedio MarinoCentro Oceanográfico de CanariasMass transports in the Bay of Biscay for thermocline, intermediate and deep water masses are estimated from a box inverse model applied to hydrographic data from a quasi-synoptic survey carried out in August 2005. The model obeys conservation statements for mass in a volume of ocean bounded by 43 full depth CTD stations in the horizontal, and neutral density layers in the vertical. It permits advective exchange between layers and an adjustment of the Ekman transport and the freshwater flux divergences. Bay of Biscay has a thermocline transport of −8.0 ± 0.7 Sv with an anticyclonic recirculation of +6.9 ± 0.6 Sv. An equatorward flow of +0.5 ± 0.4 Sv is attributed to the slope current close to the northwestern Spanish coast. The mean wind stress curl for the region corresponds with a clockwise upper layer flow which produces a downwelling of −0.6 ± 0.4 Sv. The surface circulation pattern agrees with the obtained with the Jason-1 altimeter. Intermediate waters follow the same surface pattern of the thermocline waters as a subsurface eastern boundary current with an eastward flow of −7.9 ± 1.0 Sv and a southwestward flow of +8.0 ± 1.0 Sv. Finally, our results show that deep waters also flow into the box with a net transport of −3.6 ± 2.0 Sv and flow out of the box with a net transport of 2.3 ± 2.0 Sv.No202320232008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/318238reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Canariashttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2007JC004490info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3182382026-05-22T06:33:51Z
dc.title.none.fl_str_mv Mass transport in the Bay of Biscay from an inverse box model
title Mass transport in the Bay of Biscay from an inverse box model
spellingShingle Mass transport in the Bay of Biscay from an inverse box model
Fraile-Nuez, Eugenio
Medio Marino
Centro Oceanográfico de Canarias
title_short Mass transport in the Bay of Biscay from an inverse box model
title_full Mass transport in the Bay of Biscay from an inverse box model
title_fullStr Mass transport in the Bay of Biscay from an inverse box model
title_full_unstemmed Mass transport in the Bay of Biscay from an inverse box model
title_sort Mass transport in the Bay of Biscay from an inverse box model
dc.creator.none.fl_str_mv Fraile-Nuez, Eugenio
Plaza-Jorge, Francisco
Hernández-Guerra, Alonso
Vargas-Yáñez, Manuel
Lavín, Alicia
author Fraile-Nuez, Eugenio
author_facet Fraile-Nuez, Eugenio
Plaza-Jorge, Francisco
Hernández-Guerra, Alonso
Vargas-Yáñez, Manuel
Lavín, Alicia
author_role author
author2 Plaza-Jorge, Francisco
Hernández-Guerra, Alonso
Vargas-Yáñez, Manuel
Lavín, Alicia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Medio Marino
Centro Oceanográfico de Canarias
topic Medio Marino
Centro Oceanográfico de Canarias
description Mass transports in the Bay of Biscay for thermocline, intermediate and deep water masses are estimated from a box inverse model applied to hydrographic data from a quasi-synoptic survey carried out in August 2005. The model obeys conservation statements for mass in a volume of ocean bounded by 43 full depth CTD stations in the horizontal, and neutral density layers in the vertical. It permits advective exchange between layers and an adjustment of the Ekman transport and the freshwater flux divergences. Bay of Biscay has a thermocline transport of −8.0 ± 0.7 Sv with an anticyclonic recirculation of +6.9 ± 0.6 Sv. An equatorward flow of +0.5 ± 0.4 Sv is attributed to the slope current close to the northwestern Spanish coast. The mean wind stress curl for the region corresponds with a clockwise upper layer flow which produces a downwelling of −0.6 ± 0.4 Sv. The surface circulation pattern agrees with the obtained with the Jason-1 altimeter. Intermediate waters follow the same surface pattern of the thermocline waters as a subsurface eastern boundary current with an eastward flow of −7.9 ± 1.0 Sv and a southwestward flow of +8.0 ± 1.0 Sv. Finally, our results show that deep waters also flow into the box with a net transport of −3.6 ± 2.0 Sv and flow out of the box with a net transport of 2.3 ± 2.0 Sv.
publishDate 2008
dc.date.none.fl_str_mv 2008
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/318238
url http://hdl.handle.net/10261/318238
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Canarias
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2007JC004490
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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