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dc.contributor.authorBracco, Annalisa  Concept link
dc.contributor.authorPedlosky, Joseph  Concept link
dc.contributor.authorPickart, Robert S.  Concept link
dc.date.accessioned2010-11-04T14:46:44Z
dc.date.available2010-11-04T14:46:44Z
dc.date.issued2008-09
dc.identifier.citationJournal of Physical Oceanography 38 (2008): 1992-2002en_US
dc.identifier.urihttps://hdl.handle.net/1912/4059
dc.descriptionAuthor Posting. © American Meteorological Society, 2008. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 38 (2008): 1992-2002, doi:10.1175/2008JPO3669.1.en_US
dc.description.abstractThis paper extends A. Bracco and J. Pedlosky’s investigation of the eddy-formation mechanism in the eastern Labrador Sea by including a more realistic depiction of the boundary current. The quasigeostrophic model consists of a meridional, coastally trapped current with three vertical layers. The current configuration and topographic domain are chosen to match, as closely as possible, the observations of the boundary current and the varying topographic slope along the West Greenland coast. The role played by the bottom-intensified component of the boundary current on the formation of the Labrador Sea Irminger Rings is explored. Consistent with the earlier study, a short, localized bottom-trapped wave is responsible for most of the perturbation energy growth. However, for the instability to occur in the three-layer model, the deepest component of the boundary current must be sufficiently strong, highlighting the importance of the near-bottom flow. The model is able to reproduce important features of the observed vortices in the eastern Labrador Sea, including the polarity, radius, rate of formation, and vertical structure. At the time of formation, the eddies have a surface signature as well as a strong circulation at depth, possibly allowing for the transport of both surface and near-bottom water from the boundary current into the interior basin. This work also supports the idea that changes in the current structure could be responsible for the observed interannual variability in the number of Irminger Rings formed.en_US
dc.description.sponsorshipAB is supported by WHOI unrestricted funds, JP by the National Science Foundation OCE 85108600, and RP by 0450658.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/2008JPO3669.1
dc.subjectEddiesen_US
dc.subjectBoundary currentsen_US
dc.subjectQuasigeostrophic modelsen_US
dc.subjectNorth Atlanticen_US
dc.subjectCoastlinesen_US
dc.titleEddy formation near the west coast of Greenlanden_US
dc.typeArticleen_US
dc.identifier.doi10.1175/2008JPO3669.1


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