Modes of covariability between sea surface temperature and wind stress intraseasonal anomalies along the coast of Peru from satellite observations (2000–2008)

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dc.contributor.authorDewitte, Boris
dc.contributor.authorIllig, Serena
dc.contributor.authorRenault, L.
dc.contributor.authorGoubanova, Katerina
dc.contributor.authorTakahashi, Ken
dc.contributor.authorGushchina, D.
dc.contributor.authorMosquera Vásquez, Kobi Alberto
dc.contributor.authorPurca, S.
dc.coverage.spatialPerú
dc.date.accessioned2018-09-21T16:43:54Z
dc.date.available2018-09-21T16:43:54Z
dc.date.issued2011-04
dc.description.abstractThe Tropical Rainfall Measuring Mission Microwave Imager sea surface temperature (SST) and QuikSCAT wind stress satellite data are used to investigate the intraseasonal upwelling variability along the coat of Peru over the period 2000–2008. Two regions of peak variance correspond to the central Peru region (Pisco region, 15°S) and the northern Peru region (Piura region, 5°S). A covariance analysis reveals a significant coherency between winds and SST anomalies off Pisco, consistent with Ekman pumping and transport dynamics. The upwelling cell consists in a meridionally extended fringe of colder (warmer) water extending as far as 250 km from the coast at 15°S. In the Piura region, the intraseasonal covariability pattern is represented by two modes, one relevant to the direct Ekman dynamics and the other one associated with the remote forcing of intraseasonal oceanic Kelvin wave. Two regimes of variability are evidenced. A low‐period regime (10–25 days) is the signature of Ekman transport/pumping dynamics and is remotely forced by the migratory atmospheric disturbances across the southeastern Pacific anticyclone. A high‐period regime (35–60 day band) is associated with the combined forcing of oceanic equatorial Kelvin waves and migratory atmospheric disturbances in the midlatitudes. In particular, the modes of covariability exhibit a prominent ∼50 day period energy peak. It is shown that this period arises from the impact of the first two baroclinic modes Kelvin wave, with the second baroclinic mode Kelvin wave being more influential on the Piura region.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationDewitte, B., Illig, S., Renault, L., Goubanova, K., Takahashi, K., Gushchina, D., ... Purca, S. (2011). Modes of covariability between sea surface temperature and wind stress intraseasonal anomalies along the coast of Peru from satellite observations (2000–2008).==$Journal of Geophysical Research: Oceans, 116$== (C4), C04028. https://doi.org/10.1029/2010JC006495es_ES
dc.identifier.doihttps://doi.org/10.1029/2010JC006495es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Geophysical Research: Oceanses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3043
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Union (AGU)es_ES
dc.relation.ispartofurn:issn:2169-9313
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.uri(c) American Geophysical Uniones_ES
dc.subjectUpwellinges_ES
dc.subjectTeleconnectionses_ES
dc.subjectMJOes_ES
dc.subjectSatellite dataes_ES
dc.subjectSSTes_ES
dc.subjectEkman pumpinges_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.titleModes of covariability between sea surface temperature and wind stress intraseasonal anomalies along the coast of Peru from satellite observations (2000–2008)es_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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