The 2002/2003 El Niño: equatorial waves sequence and their impact on sea surface temperature

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dc.contributor.authorMosquera Vásquez, Kobi Alberto
dc.contributor.authorDewitte, Boris
dc.contributor.authorIllig, Serena
dc.contributor.authorTakahashi, Ken
dc.contributor.authorGarric, G.
dc.date.accessioned2018-09-17T17:04:32Z
dc.date.available2018-09-17T17:04:32Z
dc.date.issued2013-01
dc.description.abstractThe recent decades have experienced changes in the characteristics of the El Niño phenomenon, with in particular an increased occurrence of so‐called Modoki or Central Pacific El Niños. Here the 2002/2003 El Niño, characterized as a Central Pacific El Niño, is studied from an Ocean General Circulation Model simulation. The focus is on the sequence of equatorial waves and their impact on zonal and vertical advection. The wave amplitude according to the most energetic baroclinic modes are first estimated, which allows inferring the sequence of the intraseasonal equatorial Kelvin (IKW) and Rossby (IRW) waves. It is shown that energetic downwelling IKWs, forced in the western‐central Pacific, crossed the equatorial Pacific. Reflections of IKWs into IRWs onto the zonally varying thermocline and eastern boundary are also observed. A simplified heat budget of the surface layer is then carried out to infer the dominant processes at work during the evolution of this event focusing on the wave‐induced advection terms. The results indicate that the warming phase (April–November 2002) is mainly controlled by zonal advection of mean temperature (accounted for by IKWs and locally wind‐driven current) and by vertical advection in the eastern Pacific. The cooling phase (December 2002 to April 2003) is dominated by a reduction in solar radiation and the IRW‐induced zonal advection of mean temperature respectively in the central and eastern equatorial Pacific. The recharge‐discharge process is also showed to be at work with the recharge (discharge) process operating mainly through the second (first) baroclinic mode.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationMosquera‐Vásquez, K., Dewitte, B., Illig, S., Takahashi, K., & Garric, G. (2013). The 2002/2003 El Niño: equatorial waves sequence and their impact on sea surface temperature.==$Journal of Geophysical Research: Oceans, 118$==(1), 346-357. https://doi.org/10.1029/2012JC008551es_ES
dc.identifier.doihttps://doi.org/10.1029/2012JC008551es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Geophysical Research: Oceanses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2973
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.subjectEl Niñoes_ES
dc.subjectEquatorial waveses_ES
dc.subjectWarm water volumees_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#1.05.10es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.11es_ES
dc.titleThe 2002/2003 El Niño: equatorial waves sequence and their impact on sea surface temperaturees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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