Mostrar el registro sencillo del ítem

dc.contributor.author Sulca Jota, Juan Carlos
dc.contributor.author Takahashi, Ken
dc.contributor.author Espinoza, Jhan Carlo
dc.contributor.author Vuille, Mathias
dc.contributor.author Lavado-Casimiro, Waldo
dc.coverage.spatial Sudamérica
dc.date.accessioned 2018-08-06T12:59:21Z
dc.date.available 2018-08-06T12:59:21Z
dc.date.issued 2018-01
dc.identifier.citation Sulca, J., Takahashi, K., Espinoza, J. C., Vuille, M., & Lavado‐Casimiro, W. (2018). Impacts of different ENSO flavors and tropical Pacific convection variability (ITCZ, SPCZ) on austral summer rainfall in South America, with a focus on Peru.==$International Journal of Climatology, 38$==(1), 420-435. https://doi.org/10.1002/joc.5185 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2251
dc.description.abstract El Niño in the eastern and central Pacific has different impacts on the rainfall of South America, and the atmospheric pathways through the South Pacific Convergence Zone (SPCZ) and Inter‐Tropical Convergence Zone (ITCZ) are poorly understood. To address this, we performed linear regression analysis of E (eastern Pacific) and C (central Pacific) indices of sea surface temperature (SST), as well as precipitation indices for the SPCZ and ITCZ, with gridded precipitation and reanalysis data sets during the austral summer (December–February) for the 1980–2016 period. Positive C induces dry anomalies along the tropical Andes and northern South America (NSA), while wet anomalies prevail over southeastern South America (SESA). Moreover, it produces wet conditions in the northwestern Peruvian Amazon. In contrast, positive E enhances wet conditions along the coasts of Ecuador and northern Peru associated with the southward displacement of the eastern Pacific ITCZ and induces dry conditions in Altiplano, Amazon basin, and northeastern Brazil (NEB). Both El Niño Southern Oscillation (ENSO) indices are associated with weakened upper‐level easterly flow over Peru, but it is more restricted to the central and southern Peruvian Andes with positive E. Both SPCZ indices, the zonal position of the SPCZ and its latitudinal displacement, suppress rainfall along western Peruvian Andes when are positive, but the latter also inhibits rainfall over the Bolivian Altiplano. They are also linked to upper‐level westerly wind anomalies overall of Peru, but these anomalies do not extend as far south in the first. The southward displacement of the eastern Pacific ITCZ also induces wet anomalies in SESA while dry anomalies prevail over NEB, the western Amazon basin, and Bolivia. Oppositely, the southward displacement of the central Pacific ITCZ induces dry anomalies in NEB and along the northern coast of Peru; while wet anomalies occur mainly in eastern Brazil, Paraguay, and Bolivia through an enhancement of the low level jet. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Royal Meteorological Society es_ES
dc.relation.ispartof urn:issn:0899-8418
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Rainfall es_ES
dc.subject Atmospheric teleconnections es_ES
dc.subject ENSO es_ES
dc.subject SPCZ es_ES
dc.subject ITCZ es_ES
dc.subject South America es_ES
dc.subject Andes es_ES
dc.subject Peru es_ES
dc.title Impacts of different ENSO flavors and tropical Pacific convection variability (ITCZ, SPCZ) on austral summer rainfall in South America, with a focus on Peru es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.00 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.09 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.10 es_ES
dc.identifier.journal International Journal of Climatology es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1002/joc.5185 es_ES

Thumbnail

 Bloqueado

Mostrar el registro sencillo del ítem