Change of the rainfall seasonality over Central Peruvian Andes: onset, and, duration and its relationship with large-scale atmospheric circulation

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dc.contributor.authorGiráldez, Lucy
dc.contributor.authorSilva Vidal, Yamina
dc.contributor.authorZubieta Barragán, Ricardo
dc.contributor.authorSulca Jota, Juan Carlos
dc.coverage.spatialAndes
dc.coverage.spatialHuancayo
dc.coverage.spatialPerú
dc.date.accessioned2020-01-31T11:41:03Z
dc.date.available2020-01-31T11:41:03Z
dc.date.issued2020-01-28
dc.description.abstractChanges of the onset dates, end dates, and duration of the rainy season over central Peruvian Andes (Mantaro river basin, MRB) could severely affect water resources management and the main economic activities (e.g., rainfed agriculture, raising cattle, among others). Nonetheless, these changes have not been documented for the Tropical Andes. To asses that, we used daily datasets of observed rainfall during the 1965–2013 period. For this period, the average onset (end) date of the rainy season over the MRB occurs in the pentad 17 (19–23 September) [pentad 57 (7–11 April)]. The duration of the rainy season mainly is modulated by the onset dates due to it has higher variability than end dates. There is a reduction of 3 days/decade in the duration of wet season over the MRB for the last four decades due to the delay of the onset days. Furthermore, El Niño favors late-onset and early end of the rainy season, while La Niña favors early onset and late end of the rainy season in the MRB. Onset dates are related to the propagation of the convective region of the South American Monsoon System (SAMS), from the Caribbean region toward the central Amazon basin. Early (late)-onset days are associated with a southward (northward) shift of the South Atlantic Convergence Zone (SACZ) and weak (strong) convection over equatorial Atlantic that induces the southernmost propagation (eastward shift) of the SAMS.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationGiráldez, L., Silva, Y., Zubieta, R., & Sulca, J. (2020). Change of the rainfall seasonality over Central Peruvian Andes: onset, end, duration and its relationship with large-scale atmospheric circulation.==$Climate, 8$==(2), 23. https://doi.org/10.3390/cli8020023es_ES
dc.identifier.doihttps://doi.org/10.3390/cli8020023es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalClimatees_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/4750
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.relation.ispartofurn:issn:2225-1154
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttps://creativecommons.org/licences/by/4.0/es_ES
dc.subjectRainy season durationes_ES
dc.subjectOnset and end dateses_ES
dc.subjectCentral Peruvian Andeses_ES
dc.subjectRainfall seasonalityes_ES
dc.subjectMantaro river basines_ES
dc.subjectLAMARes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.00es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.09es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.11es_ES
dc.titleChange of the rainfall seasonality over Central Peruvian Andes: onset, and, duration and its relationship with large-scale atmospheric circulationes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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