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dc.contributor.authorMorey, Steven L.  Concept link
dc.contributor.authorGopalakrishnan, Ganesh  Concept link
dc.contributor.authorPallás-Sanz, Enric  Concept link
dc.contributor.authorAzevedo Correia De Souza, Joao Marcos  Concept link
dc.contributor.authorDonohue, Kathleen A.  Concept link
dc.contributor.authorPérez-Brunius, Paula  Concept link
dc.contributor.authorDukhovskoy, Dmitry S.  Concept link
dc.contributor.authorChassignet, Eric P.  Concept link
dc.contributor.authorCornuelle, Bruce D.  Concept link
dc.contributor.authorBower, Amy S.  Concept link
dc.contributor.authorFurey, Heather H.  Concept link
dc.contributor.authorHamilton, Peter  Concept link
dc.contributor.authorCandela, Julio  Concept link
dc.date.accessioned2020-11-20T21:03:03Z
dc.date.available2020-11-20T21:03:03Z
dc.date.issued2020-04-08
dc.identifier.citationMorey, S. L., Gopalakrishnan, G., Pallas Sanz, E., Correia De Souza,Joao Marcos Azevedo, Donohue, K., Perez-Brunius, P., Dukhovskoy, D., Chassignet, E., Cornuelle, B., Bower, A., Furey, H., Hamilton, P., & Candela, J. (2020). Assessment of numerical simulations of deep circulation and variability in the Gulf of Mexico using recent observations. Journal of Physical Oceanography, 50(4), 1045-1064.en_US
dc.identifier.urihttps://hdl.handle.net/1912/26392
dc.descriptionAuthor Posting. © American Meteorological Society, 2020. 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 50(4), (2020): 1045-1064, doi:10.1175/JPO-D-19-0137.1.en_US
dc.description.abstractThree simulations of the circulation in the Gulf of Mexico (the “Gulf”) using different numerical general circulation models are compared with results of recent large-scale observational campaigns conducted throughout the deep (>1500 m) Gulf. Analyses of these observations have provided new understanding of large-scale mean circulation features and variability throughout the deep Gulf. Important features include cyclonic flow along the continental slope, deep cyclonic circulation in the western Gulf, a counterrotating pair of cells under the Loop Current region, and a cyclonic cell to the south of this pair. These dominant circulation features are represented in each of the ocean model simulations, although with some obvious differences. A striking difference between all the models and the observations is that the simulated deep eddy kinetic energy under the Loop Current region is generally less than one-half of that computed from observations. A multidecadal integration of one of these numerical simulations is used to evaluate the uncertainty of estimates of velocity statistics in the deep Gulf computed from limited-length (4 years) observational or model records. This analysis shows that the main deep circulation features identified from the observational studies appear to be robust and are not substantially impacted by variability on time scales longer than the observational records. Differences in strengths and structures of the circulation features are identified, however, and quantified through standard error analysis of the statistical estimates using the model solutions.en_US
dc.description.sponsorshipThis work was supported by the Gulf Research Program of the National Academy of Sciences under Awards 2000006422 and 2000009966. The content is solely the responsibility of the authors and does not necessarily represent the official views of the Gulf Research Program or the National Academy of Sciences. The authors acknowledge the GLORYS project for providing the ocean reanalysis data used in the ROMS simulation. GLORYS is jointly conducted by MERCATOR OCEAN, CORIOLIS, and CNRS/INSU. Installation, recovery, data acquisition, and processing of the CANEK group current-meter moorings were possible because of CICESE-PetróleosMexicanos Grant PEP-CICESE 428229851 and the dedicated work of the crew of the B/O Justo Sierra and scientists of the CANEK group. The authors thank Dr. Aljaz Maslo, CICESE, for assistance with analysis of model data. The Bureau of Ocean Energy Management (BOEM), U.S. Dept. of the Interior, provided funding for the Lagrangian Study of the Deep Circulation in the Gulf of Mexico and the Observations and Dynamics of the Loop Current study. HYCOM simulation data are available from the HYCOM data server (https://www.hycom.org/data/goml0pt04/expt-02pt2), MITgcm data are available from the ECCO data server (http://ecco.ucsd.edu/gom_results2.html), and the ROMS simulation data are available from GRIIDC (NA.x837.000:0001).en_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/JPO-D-19-0137.1
dc.subjectOcean circulationen_US
dc.subjectAbyssal circulationen_US
dc.subjectBottom currents/bottom wateren_US
dc.subjectEddiesen_US
dc.subjectOcean modelsen_US
dc.titleAssessment of numerical simulations of deep circulation and variability in the Gulf of Mexico using recent observationsen_US
dc.typeArticleen_US
dc.identifier.doi10.1175/JPO-D-19-0137.1


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