Eddy-induced cross-shelf export of high Chl-a coastal waters in the SE Bay of Biscay

Handle URI:
http://hdl.handle.net/10754/626349
Title:
Eddy-induced cross-shelf export of high Chl-a coastal waters in the SE Bay of Biscay
Authors:
Rubio, Anna ( 0000-0002-6284-2639 ) ; Caballero, Ainhoa; Orfila, Alejandro; Hernández-Carrasco, Ismael; Ferrer, Luis; González, Manuel; Solabarrieta, Lohitzune; Mader, Julien
Abstract:
Different remote sensing data were combined to characterise a winter anticyclonic eddy in the southeastern Bay of Biscay and to infer its effects on cross-shelf exchanges, in a period when typical along shelf-slope currents depict a cyclonic pattern. While the joint analysis of available satellite data (infrared, visible and altimetry) permitted the characterisation and tracking of the anticyclone properties and path, data from a coastal high-frequency radar system enabled a quantitative analysis of the surface cross-shelf transports associated with this anticyclone. The warm core anticyclone had a diameter of around 50km, maximum azimuthal velocities near 50cms−1 and a relative vorticity of up to −0.45f. The eddy generation occurred after the relaxation of a cyclonic wind-driven current regime over the shelf-slope; then, the eddy remained stationary for several weeks until it started to drift northwards along the shelf break. The surface signature of this eddy was observed by means of high-frequency radar data for 20 consecutive days, providing a unique opportunity to characterise and quantify, from a Lagrangian perspective, the associated transport and its effect on the Chl-a surface distribution. We observed the presence of mesoscale structures with similar characteristics in the area during different winters within the period 2011–2014. Our results suggest that the eddy-induced recurrent cross-shelf export is an effective mechanism for the expansion of coastal productive waters into the adjacent oligotrophic ocean basin.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC)
Citation:
Rubio A, Caballero A, Orfila A, Hernández-Carrasco I, Ferrer L, et al. (2018) Eddy-induced cross-shelf export of high Chl-a coastal waters in the SE Bay of Biscay. Remote Sensing of Environment 205: 290–304. Available: http://dx.doi.org/10.1016/j.rse.2017.10.037.
Publisher:
Elsevier BV
Journal:
Remote Sensing of Environment
Issue Date:
8-Dec-2017
DOI:
10.1016/j.rse.2017.10.037
Type:
Article
ISSN:
0034-4257
Sponsors:
This research has received funding from the European Union's Horizon 2020 - Research and Innovation Framework Programme under grant agreement no. 654410. The work of A. Rubio, J. Mader and L. Ferrer was partially supported by the LIFE-LEMA project (LIFE15 ENV/ES/000252) and the Directorate of Emergency Attention and Meteorology of the Basque Government. The research has also been undertaken with the financial support of the Spanish Ministry of Economy and Competitiveness (National Plan for Scientific and Technical Research and Innovation), under projects CTM2013-45423-R and CTM2015-66225-C2-2-P, and the Department of Environment, Regional Planning, Agriculture and Fisheries of the Basque Government (Marco Programme). The along-track altimetry data used in this study were developed, validated and distributed by CTOH/LEGOS, and the geostrophic current fields from altimetry were provided by SSALTO/DUACS (distributed by Aviso, with support from CNES, http://www.aviso.oceanobs.com/duacs/). The SST and Level 2 Chl-a images were produced and distributed by the NERC Earth Observation Data Acquisition and Analysis Service (NEODAAS, http://www.neodaas.ac.uk/data). While, the Level 4 Chl-a images were obtained from COPERNICUS (http://marine.copernicus.eu/). I. Hernández-Carrasco acknowledges the Juan de la Cierva contract funded by the Spanish Government. This paper is contribution no. 832 of AZTI-Marine Research.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S003442571730500X
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRubio, Annaen
dc.contributor.authorCaballero, Ainhoaen
dc.contributor.authorOrfila, Alejandroen
dc.contributor.authorHernández-Carrasco, Ismaelen
dc.contributor.authorFerrer, Luisen
dc.contributor.authorGonzález, Manuelen
dc.contributor.authorSolabarrieta, Lohitzuneen
dc.contributor.authorMader, Julienen
dc.date.accessioned2017-12-11T11:42:42Z-
dc.date.available2017-12-11T11:42:42Z-
dc.date.issued2017-12-08en
dc.identifier.citationRubio A, Caballero A, Orfila A, Hernández-Carrasco I, Ferrer L, et al. (2018) Eddy-induced cross-shelf export of high Chl-a coastal waters in the SE Bay of Biscay. Remote Sensing of Environment 205: 290–304. Available: http://dx.doi.org/10.1016/j.rse.2017.10.037.en
dc.identifier.issn0034-4257en
dc.identifier.doi10.1016/j.rse.2017.10.037en
dc.identifier.urihttp://hdl.handle.net/10754/626349-
dc.description.abstractDifferent remote sensing data were combined to characterise a winter anticyclonic eddy in the southeastern Bay of Biscay and to infer its effects on cross-shelf exchanges, in a period when typical along shelf-slope currents depict a cyclonic pattern. While the joint analysis of available satellite data (infrared, visible and altimetry) permitted the characterisation and tracking of the anticyclone properties and path, data from a coastal high-frequency radar system enabled a quantitative analysis of the surface cross-shelf transports associated with this anticyclone. The warm core anticyclone had a diameter of around 50km, maximum azimuthal velocities near 50cms−1 and a relative vorticity of up to −0.45f. The eddy generation occurred after the relaxation of a cyclonic wind-driven current regime over the shelf-slope; then, the eddy remained stationary for several weeks until it started to drift northwards along the shelf break. The surface signature of this eddy was observed by means of high-frequency radar data for 20 consecutive days, providing a unique opportunity to characterise and quantify, from a Lagrangian perspective, the associated transport and its effect on the Chl-a surface distribution. We observed the presence of mesoscale structures with similar characteristics in the area during different winters within the period 2011–2014. Our results suggest that the eddy-induced recurrent cross-shelf export is an effective mechanism for the expansion of coastal productive waters into the adjacent oligotrophic ocean basin.en
dc.description.sponsorshipThis research has received funding from the European Union's Horizon 2020 - Research and Innovation Framework Programme under grant agreement no. 654410. The work of A. Rubio, J. Mader and L. Ferrer was partially supported by the LIFE-LEMA project (LIFE15 ENV/ES/000252) and the Directorate of Emergency Attention and Meteorology of the Basque Government. The research has also been undertaken with the financial support of the Spanish Ministry of Economy and Competitiveness (National Plan for Scientific and Technical Research and Innovation), under projects CTM2013-45423-R and CTM2015-66225-C2-2-P, and the Department of Environment, Regional Planning, Agriculture and Fisheries of the Basque Government (Marco Programme). The along-track altimetry data used in this study were developed, validated and distributed by CTOH/LEGOS, and the geostrophic current fields from altimetry were provided by SSALTO/DUACS (distributed by Aviso, with support from CNES, http://www.aviso.oceanobs.com/duacs/). The SST and Level 2 Chl-a images were produced and distributed by the NERC Earth Observation Data Acquisition and Analysis Service (NEODAAS, http://www.neodaas.ac.uk/data). While, the Level 4 Chl-a images were obtained from COPERNICUS (http://marine.copernicus.eu/). I. Hernández-Carrasco acknowledges the Juan de la Cierva contract funded by the Spanish Government. This paper is contribution no. 832 of AZTI-Marine Research.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S003442571730500Xen
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Remote Sensing of Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Remote Sensing of Environment, [, , (2017-12-08)] DOI: 10.1016/j.rse.2017.10.037 . © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectOcean mesoscale eddiesen
dc.subjectCross-shelf transporten
dc.subjectFSLEen
dc.subjectRemote sensingen
dc.subjectHigh-Frequency Radaren
dc.subjectLagrangian Coherent Structuresen
dc.subjectLagrangian connectivity mapsen
dc.titleEddy-induced cross-shelf export of high Chl-a coastal waters in the SE Bay of Biscayen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalRemote Sensing of Environmenten
dc.eprint.versionPost-printen
dc.contributor.institutionAZTI-Marine Research, Herrera Kaia, Portualdea z/g, 20110 Pasaia, Spainen
dc.contributor.institutionMarine Technologies and Operational Oceanography Department, IMEDEA (CSIC-UIB), Esporles, Spainen
dc.contributor.institutionSOCIB (Balearic Islands Coastal Observing System), Parc Bit, Edificio Naorte, 2nd floor, 07121 Palma de Mallorca, Spainen
kaust.authorSolabarrieta, Lohitzuneen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.