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

Nogueira, J.; Gutierrez, D.; Cardich Salazar, Jorge Aquiles; Valdes, J.; Sifeddine, A.; Castillo, A.; Salvatteci, R.; Caquineau, S.; Flores-Aqueveque, V.; Rutllant, J.; Briceño-Zuluaga, F.

dc.contributor.author	Briceño-Zuluaga, F.
dc.contributor.author	Flores-Aqueveque, V.
dc.contributor.author	Nogueira, J.
dc.contributor.author	Castillo, A.
dc.contributor.author	Cardich Salazar, Jorge Aquiles
dc.contributor.author	Rutllant, J.
dc.contributor.author	Caquineau, S.
dc.contributor.author	Sifeddine, A.
dc.contributor.author	Salvatteci, R.
dc.contributor.author	Valdes, J.
dc.contributor.author	Gutierrez, D.
dc.date.accessioned	2023-04-16T04:38:16Z
dc.date.available	2023-04-16T04:38:16Z
dc.date.issued	2023
dc.identifier.uri	https://hdl.handle.net/20.500.12866/13406
dc.description.abstract	In 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).	en_US
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation.ispartofseries	Aeolian Research
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	Surface wind	en_US
dc.subject	sea surface	en_US
dc.subject	temperature	en_US
dc.subject	south peruvian coast	en_US
dc.title	Surface wind strength and sea surface temperature connections along the south peruvian coast during the last 150 years	en_US
dc.type	info:eu-repo/semantics/article
dc.identifier.doi	https://doi.org/10.1016/j.aeolia.2023.100855
dc.subject.ocde	https://purl.org/pe-repo/ocde/ford#1.05.10
dc.relation.issn	1875-9637