Recent Changes in the Low-Level Jet along the Subtropical West Coast of South America

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dc.contributor.authorAguirre, Catalina
dc.contributor.authorFlores-Aqueveque, Valentina
dc.contributor.authorVilches, Pablo
dc.contributor.authorVásquez, Alicia
dc.contributor.authorRutllant, José A.
dc.contributor.authorGarreaud, René
dc.date.accessioned2022-11-30T02:46:09Z
dc.date.available2022-11-30T02:46:09Z
dc.date.issued2021
dc.description.abstractSurface winds along the subtropical west coast of South America are characterized by the quasi-weekly occurrences of low-level jet events. These short lived but intense wind events impact the coastal ocean environment. Hence, identifying long-term trends in the coastal low-level jet (CLLJ) is essential for understanding changes in marine ecosystems. Here we use ERA5 reanalysis (1979–2019) and an objective algorithm to track anticyclones to investigate recent changes in CLLJ events off central Chile (25–43 °S). Results present evidence that the number of days with intense wind (≥10 ms−1), and the number and duration of CLLJ events have significantly changed off central Chile in recent decades. There is an increase in the number of CLLJ events in the whole study area during winter (June-July-August; JJA), while during summer (December–January–February; DJF) a decrease is observed at lower latitudes (29–34 °S), and an increase is found at the southern boundary of the Humboldt system. We suggest that changes in the central pressures and frequency of extratropical, migratory anticyclones that reach the coast of South America, which force CLLJs, have played an important role in the recent CLLJ changes observed in this region.en_ES
dc.facultadFacultad de Ingenieríaen_ES
dc.file.nameAguirre_Rec2021.pdf
dc.identifier.citationAguirre, C.; Flores-Aqueveque, V.; Vilches, P.; Vásquez, A.; Rutllant, J.A.; Garreaud, R. Recent Changes in the Low-Level Jet along the Subtropical West Coast of South America. Atmosphere 2021, 12, 465. https://doi.org/10.3390/atmos12040465en_ES
dc.identifier.doihttps://doi.org/10.3390/atmos12040465
dc.identifier.urihttp://repositoriobibliotecas.uv.cl/handle/uvscl/7209
dc.languageen
dc.publisherMDPI
dc.sourceAtmosphere
dc.subjectCOASTAL WINDSen_ES
dc.subjectCOASTAL LOW-LEVEL JETen_ES
dc.subjectUPWELLING FAVORABLE WIND EVENTSen_ES
dc.subjectHUMBOLDT UPWELLING SYSTEMen_ES
dc.subjectERA5 REANALYSISen_ES
dc.titleRecent Changes in the Low-Level Jet along the Subtropical West Coast of South America
dc.typeArticulo
uv.departamentoEscuela de Ingenieria Civil Oceanica

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