High‐resolution modeling of the Eastern Tropical Pacific oxygen minimum zone: sensitivity to the tropical oceanic circulation

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dc.contributor.authorMontes Torres, Ivonne
dc.contributor.authorDewitte, Boris
dc.contributor.authorGutknecht, Elodie
dc.contributor.authorPaulmier, Aurélien
dc.contributor.authorDadou, Isabelle
dc.contributor.authorOschlies, Andreas
dc.contributor.authorGarçon, Véronique
dc.coverage.spatialOceano Pacífico
dc.date.accessioned2018-09-12T19:24:17Z
dc.date.available2018-09-12T19:24:17Z
dc.date.issued2014-08
dc.description.abstractThe connection between the equatorial mean circulation and the oxygen minimum zone (OMZ) in the Eastern Tropical Pacific is investigated through sensitivity experiments with a high‐resolution coupled physical‐biogeochemical model. A validation against in situ observations indicates a realistic simulation of the vertical and horizontal oxygen distribution by the model. Two sets of climatological open‐boundary conditions for the physical variables, which differ slightly with respect to the intensity and vertical structure of the Equatorial Current System, are shown to lead to contrasting characteristics of the simulated OMZ dynamics. From a Lagrangian perspective, the mean differences near the coast originate to a large extent from the different transport of deoxygenated waters by the secondary Tsuchiya Jet (secondary Southern Subsurface Countercurrent, sSSCC). The O₂ budget further indicates a large difference in the balance between tendency terms, with advection exhibiting the largest difference between both simulations, which is shown to result from both linear and nonlinear advection. At regional scale, we also find that the variability of the physical contribution to the rate of O₂ change is one order of magnitude larger than the variability associated with the biogeochemical contribution, which originates from internal high‐frequency variability. Overall our study illustrates the large sensitivity of the OMZ dynamics to the equatorial circulation.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationMontes, I., Dewitte, B., Gutknecht, E., Paulmier, A., Dadou, I., Oschlies, A., & Garçon, V. (2014). High‐resolution modeling of the Eastern Tropical Pacific oxygen minimum zone: sensitivity to the tropical oceanic circulation.==$Journal of Geophysical Research: Oceans, 119$==(8), 5515-5532. https://doi.org/10.1002/2014JC009858es_ES
dc.identifier.doihttps://doi.org/10.1002/2014JC009858es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Geophysical Research: Oceanses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2947
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Union (AGU)es_ES
dc.relation.ispartofurn:issn:0148-0227
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttps://creativecommons.org/licences/by/4.0/es_ES
dc.subjectOMZes_ES
dc.subjectEastern Tropical Pacifices_ES
dc.subjectEquatorial Current Systemes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.00es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.09es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.11es_ES
dc.titleHigh‐resolution modeling of the Eastern Tropical Pacific oxygen minimum zone: sensitivity to the tropical oceanic circulationes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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