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Surface wind strength and sea surface temperature connections along the south peruvian coast during the last 150 years

dc.contributor.authorBriceno-Zuluaga, F.
dc.contributor.authorFlores-Aqueveque, V.
dc.contributor.authorNogueira, J.
dc.contributor.authorCastillo, A.
dc.contributor.authorCardich, J.
dc.contributor.authorRutllant, J.
dc.contributor.authorCaquineau, S.
dc.contributor.authorSifeddine, Abdel
dc.contributor.authorSalvatteci, R.
dc.contributor.authorValdes, J.
dc.contributor.authorGutierrez, D.
dc.date.accessioned2023-03-29T12:39:29Z
dc.date.available2023-03-29T12:39:29Z
dc.date.issued2023
dc.identifier.urihttp://repositorio.ucm.cl/handle/ucm/4600
dc.description.abstractIn recent decades, there has been a divergence in the evidence (models, observations, reanalysis data) about the trend of coastal upwelling driving winds in the current global warming scenario over the Humboldt Current System. Herein, we present a 150 yr, sub-decadal grain size distribution record of a laminated sediment core (B0405-6) retrieved from the continental shelf of the Pisco region (∼14 °S) within the wind-driven coastal upwelling system of South-Central Peru. This area is characterized by local aeolian inputs from seasonal dust storms called Paracas Winds (PW). This study aims to reconstruct the variability of surface wind intensity using the Geometric Median Diameter (GMDs) and frequency (A%) of aeolian particles in a high temporal resolution sediment core and to unravel the mechanisms that control this variability. In addition, we propose to evaluate these GMDs as a better proxy of local surface wind strength and thus the variability of upwelling favorable winds (UFWs) in these near-source conditions. Our results show a progressive intensification of the UFWs in the region throughout the last 150 years, which agrees with other records along the South Pacific coast. In addition, good correspondence was found between the UFW wind proxy and the region's sea surface temperature (SST) trends, suggesting an intensification of the driving mechanisms linked to these events. It also suggests that UFW intensification could continue as the local coastal atmospheric jet strengthens. A comparison of indirect oceanic and atmospheric records from the South American Pacific coast is shown at the regional scale, suggesting a recent progressive expansion and intensification of the South Pacific Subtropical High (SPSH).es_CL
dc.language.isoenes_CL
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
dc.sourceAeolian Research, 61, 100855es_CL
dc.subjectAeolian processeses_CL
dc.subjectCoastal upwellinges_CL
dc.subjectGlobal climate warminges_CL
dc.subjectSSTes_CL
dc.subjectGrain sizees_CL
dc.subjectPerues_CL
dc.titleSurface wind strength and sea surface temperature connections along the south peruvian coast during the last 150 yearses_CL
dc.typeArticlees_CL
dc.ucm.indexacionScopuses_CL
dc.ucm.indexacionIsies_CL
dc.ucm.urisciencedirect.com/science/article/abs/pii/S1875963723000034?via%3Dihubes_CL
dc.ucm.doidoi.org/10.1016/j.aeolia.2023.100855es_CL


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