Statistical downscaling of sea-surface wind over the Peru–Chile upwelling region: diagnosing the impact of climate change from the IPSL-CM4 model

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dc.contributor.authorGoubanova, Katerina
dc.contributor.authorEchevin, V.
dc.contributor.authorDewitte, Boris
dc.contributor.authorCodron, F.
dc.contributor.authorTakahashi, Ken
dc.contributor.authorTerray, P.
dc.contributor.authorVrac, M.
dc.coverage.spatialPerú
dc.coverage.spatialChile
dc.date.accessioned2018-08-02T19:27:51Z
dc.date.available2018-08-02T19:27:51Z
dc.date.issued2011-04
dc.description.abstractThe key aspect of the ocean circulation off Peru–Chile is the wind-driven upwelling of deep, cold, nutrient-rich waters that promote a rich marine ecosystem. It has been suggested that global warming may be associated with an intensification of upwelling-favorable winds. However, the lack of high-resolution long-term observations has been a limitation for a quantitative analysis of this process. In this study, we use a statistical downscaling method to assess the regional impact of climate change on the sea-surface wind over the Peru–Chile upwelling region as simulated by the global coupled general circulation model IPSL-CM4. Taking advantage of the high-resolution QuikSCAT wind product and of the NCEP reanalysis data, a statistical model based on multiple linear regressions is built for the daily mean meridional and zonal wind at 10 m for the period 2000–2008. The large-scale 10 m wind components and sea level pressure are used as regional circulation predictors. The skill of the downscaling method is assessed by comparing with the surface wind derived from the ERS satellite measurements, with in situ wind observations collected by ICOADS and through crossvalidation. It is then applied to the outputs of the IPSLCM4 model over stabilized periods of the pre-industrial, 2 x CO₂ and 4 x CO₂ IPCC climate scenarios. The results indicate that surface along-shore winds off central Chile (off central Peru) experience a significant intensification (weakening) during Austral winter (summer) in warmer climates. This is associated with a general decrease in intra-seasonal variability.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationGoubanova, K., Echevin, V., Dewitte, B., Codron, F., Takahashi, K., Terray, P., & Vrac, M. (2011). Statistical downscaling of sea-surface wind over the Peru–Chile upwelling region: diagnosing the impact of climate change from the IPSL-CM4 model.==$Climate Dynamics, 36,$==1365-1378. https://doi.org/10.1007/s00382-010-0824-0es_ES
dc.identifier.doihttps://doi.org/10.1007/S00382-010-0824-0es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalClimate Dynamicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2208
dc.language.isoenges_ES
dc.publisherSpringeres_ES
dc.relation.ispartofurn:issn:0930-7575
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectStatistical downscalinges_ES
dc.subjectCoastal windes_ES
dc.subjectUpwellinges_ES
dc.subjectPerues_ES
dc.subjectChilees_ES
dc.subjectClimate changees_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.titleStatistical downscaling of sea-surface wind over the Peru–Chile upwelling region: diagnosing the impact of climate change from the IPSL-CM4 modeles_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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