Mostrar el registro sencillo del ítem Belmadani, Ali Echevin, Vincent Codron, Francis Takahashi, Ken Junquas, Clémentine
dc.coverage.spatial Perú
dc.coverage.spatial Chile 2018-09-20T18:06:08Z 2018-09-20T18:06:08Z 2014
dc.identifier.citation Belmadani, A., Echevin, V., Codron, F., Takahashi, K., & Junquas, C. (2014). What dynamics drive future wind scenarios for coastal upwelling off Peru and Chile?.==$Climate Dynamics, 43,$==1893-1914. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract The dynamics of the Peru–Chile upwelling system (PCUS) are primarily driven by alongshore wind stress and curl, like in other eastern boundary upwelling systems. Previous studies have suggested that upwelling-favorable winds would increase under climate change, due to an enhancement of the thermally-driven cross-shore pressure gradient. Using an atmospheric model on a stretched grid with increased horizontal resolution in the PCUS, a dynamical downscaling of climate scenarios from a global coupled general circulation model (CGCM) is performed to investigate the processes leading to sea-surface wind changes. Downscaled winds associated with present climate show reasonably good agreement with climatological observations. Downscaled winds under climate change show a strengthening off central Chile south of 35°S (at 30°S–35°S) in austral summer (winter) and a weakening elsewhere. An alongshore momentum balance shows that the wind slowdown (strengthening) off Peru and northern Chile (off central Chile) is associated with a decrease (an increase) in the alongshore pressure gradient. Whereas the strengthening off Chile is likely due to the poleward displacement and intensification of the South Pacific Anticyclone, the slowdown off Peru may be associated with increased precipitation over the tropics and associated convective anomalies, as suggested by a vorticity budget analysis. On the other hand, an increase in the land–sea temperature difference is not found to drive similar changes in the cross-shore pressure gradient. Results from another atmospheric model with distinct CGCM forcing and climate scenarios suggest that projected wind changes off Peru are sensitive to concurrent changes in sea surface temperature and rainfall. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Springer es_ES
dc.relation.ispartof urn:issn:0930-7575
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Regional climate change es_ES
dc.subject Peru–Chile upwelling system es_ES
dc.subject Dynamical downscaling es_ES
dc.subject Upwelling-favorable winds es_ES
dc.subject Climate scenarios es_ES
dc.title What dynamics drive future wind scenarios for coastal upwelling off Peru and Chile? es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.subject.ocde es_ES
dc.identifier.journal Climate Dynamics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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