Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/50050
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dc.contributor.authorHernández-Guerra, Alonsoen_US
dc.contributor.authorPelegrí Llopart,José Luisen_US
dc.contributor.authorFraile Nuez,Eugenioen_US
dc.contributor.authorBenítez-Barrios, Verónicaen_US
dc.contributor.authorEmelianov, Mikhailen_US
dc.contributor.authorPerez Hernandez, Maria Doloresen_US
dc.contributor.authorVélez-Belchí, Pedroen_US
dc.contributor.otherHernandez-Guerra, Alonso-
dc.contributor.otherFraile-Nuez, Eugenio-
dc.contributor.otherVelez-Belchi, Pedro-
dc.contributor.otherPerez-Hernandez, Maria-
dc.contributor.otherEmelianov, Mikhail-
dc.contributor.otherPelegri, Josep L.-
dc.date.accessioned2018-11-24T12:52:11Z-
dc.date.available2018-11-24T12:52:11Z-
dc.date.issued2014en_US
dc.identifier.issn0079-6611en_US
dc.identifier.urihttp://hdl.handle.net/10553/50050-
dc.description.abstractTransatlantic hydrographic sections along latitudes 7.5N and 24.5N have been repeated with about 20 years difference, at the beginning of the 1990s and 2010s. For each period, an inverse model is applied to the closed box bound by both sections. The model imposes mass conservation for individual layers, defined by isoneutral surfaces, and the whole water column, using surface Ekman transport and several transport constraints for specific ranges of longitudes and depths. As a result, the velocities at the reference layer for each station pair and the dianeutral velocities between layers are estimated, and the horizontal velocity fields and the water, heat and freshwater transports are calculated; in particular, we find that mass transport per stratum at 24.5N in 2011 is in good agreement with the transport estimates from the RAPID-Watch array. During both realizations the dianeutral velocities downwell from the Upper North Atlantic Deep Water (UNADW) to the Lower North Atlantic Deep Water (LNADW) strata, resulting in the merging of the two southward flowing strata at 24.5N into one deep southward-moving stratum at 7.5N. At 24.5N, there is an increase in southward UNADW transport between 1992 and 2011, compensated by a decrease of southward LNADW transport; a descent in the upper limit of the Antarctic Bottom Water (AABW) from 1992 to 2011 is also inferred. The Atlantic Meridional Overturning Circulation (AMOC) is larger in 1992–93 than in 2010–11, decreasing from 24.7 ± 1.7 to 20.1 ± 1.4 Sv at 24.5N and from 29.2 ± 1.7 to 16.9 ± 1.5 Sv at 7.5N. Much of this decrease arises because of the northward flow of Antarctic Intermediate Water (AAIW), which was much more intense in 1992–93 than in 2010–11. As a consequence, heat transport at 24.5N is not significantly different in 1992 (1.4 ± 0.1 PW) and 2011 (1.2 ± 0.1 PW). The estimation of heat transport at 7.5N strongly depends on the magnitude of the North Brazil Current over the American continental platform. The freshwater flux into the box bounded by the two transoceanic sections decreases significantly from 1992–93 (−0.45 ± 0.05 Sv) to 2010–11 (−0.36 ± 0.3 Sv), meaning a decrease in net evaporation over this same area.en_US
dc.languageengen_US
dc.publisher0079-6611-
dc.relationExpedición de Circunnavegación Malaspina 2010: Cambio Global y Exploración Del Océano Globalen_US
dc.relation.ispartofProgress in Oceanographyen_US
dc.sourceProgress in Oceanography [ISSN 0079-6611], v. 128, p. 98-114en_US
dc.subject251007 Oceanografía físicaen_US
dc.subject.otherBoundary Current
dc.subject.otherFresh-Water
dc.subject.otherHeat-Flux
dc.subject.otherEquatorial Atlantic
dc.subject.otherGeneral-Circulation
dc.subject.otherEastern Boundary
dc.subject.otherDecadal Changes
dc.subject.otherCanary Current
dc.subject.otherDeep-Water
dc.subject.otherVariability
dc.titleMeridional overturning transports at 7.5N and 24.5N in the Atlantic Ocean during 1992-93 and 2010-11en_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.pocean.2014.08.016
dc.identifier.scopus84907972252-
dc.identifier.isi000343795800008-
dcterms.isPartOfProgress In Oceanography-
dcterms.sourceProgress In Oceanography[ISSN 0079-6611],v. 128, p. 98-114-
dc.contributor.authorscopusid6701736545-
dc.contributor.authorscopusid7003869003-
dc.contributor.authorscopusid12139561900-
dc.contributor.authorscopusid24398599500-
dc.contributor.authorscopusid6602966273-
dc.contributor.authorscopusid50861902200-
dc.contributor.authorscopusid7801599223-
dc.description.lastpage114-
dc.description.firstpage98-
dc.relation.volume128-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.contributor.daisngid660191-
dc.contributor.daisngid358123-
dc.contributor.daisngid1139939-
dc.contributor.daisngid2251871-
dc.contributor.daisngid851011-
dc.contributor.daisngid3057975-
dc.contributor.daisngid1378362-
dc.identifier.investigatorRIDA-4747-2008-
dc.identifier.investigatorRIDD-1521-2010-
dc.identifier.investigatorRIDI-9150-2017-
dc.identifier.investigatorRIDJ-5330-2014-
dc.identifier.investigatorRIDNo ID-
dc.identifier.investigatorRIDNo ID-
dc.utils.revisionen_US
dc.contributor.wosstandardWOS:Hernandez-Guerra, A
dc.contributor.wosstandardWOS:Pelegri, JL
dc.contributor.wosstandardWOS:Fraile-Nuez, E
dc.contributor.wosstandardWOS:Benitez-Barrios, V
dc.contributor.wosstandardWOS:Emelianov, M
dc.contributor.wosstandardWOS:Perez-Hernandez, MD
dc.contributor.wosstandardWOS:Velez-Belchi, P
dc.date.coverdateEnero 2014
dc.identifier.ulpgces
dc.description.sjr1,909
dc.description.jcr3,025
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.author.deptGIR IOCAG: Oceanografía Física-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Física-
crisitem.author.deptGIR IOCAG: Oceanografía Física-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Física-
crisitem.author.orcid0000-0002-4883-8123-
crisitem.author.orcid0000-0001-7293-9584-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameHernández Guerra, Alonso-
crisitem.author.fullNamePelegrí Llopart, José Luis-
crisitem.author.fullNameFraile Nuez,Eugenio-
crisitem.author.fullNamePérez Hernández, María Dolores-
crisitem.project.principalinvestigatorHernández León, Santiago Manuel-
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