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dc.contributor.author Espinoza, Jhan Carlo
dc.contributor.author Ronchail, Josyane
dc.contributor.author Lengaigne, Matthieu
dc.contributor.author Quispe, Nelson
dc.contributor.author Silva Vidal, Yamina
dc.contributor.author Bettolli, María Laura
dc.contributor.author Avalos, Grinia
dc.contributor.author Llacza, Alan
dc.coverage.spatial Coordillera Central
dc.coverage.spatial Amazonas
dc.coverage.spatial Perú
dc.coverage.spatial Argentina
dc.date.accessioned 2018-09-17T16:10:53Z
dc.date.available 2018-09-17T16:10:53Z
dc.date.issued 2013
dc.identifier.citation Espinoza, J. C., Ronchail, J., Lengaigne, M., Quispe, N., Silva, Y., Bettolli, M. L., ... Llacza, A. (2013). Revisiting wintertime cold air intrusions at the east of the Andes: propagating features from subtropical Argentina to Peruvian Amazon and relationship with large-scale circulation patterns.==$Climate Dynamics, 41,$==1983-2002. https://doi.org/10.1007/s00382-012-1639-y es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2969
dc.description.abstract This study investigates the spatial and temporal characteristics of cold surges that propagates northward along the eastern flank of the Andes from subtropical to tropical South America analysing wintertime in situ daily minimum temperature observations from Argentina, Bolivia and Peru and ERA-40 reanalysis over the 1975–2001 period. Cold surges usually last 2 or 3 days but are generally less persistent in the southern La Plata basin compared to tropical regions. On average, three to four cold surges are reported each year. Our analysis reveals that 52 % of cold episodes registered in the south of La Plata basin propagate northward to the northern Peruvian Amazon at a speed of around 20 m s−1. In comparison to cold surges that do not reach the tropical region, we demonstrate that these cold surges are characterized, before they reach the tropical region, by a higher occurrence of a specific circulation pattern associated to southern low-level winds progression toward low latitudes combined with subsidence and dry condition in the middle and low troposphere that reinforce the cold episode through a radiative effect. Finally, the relationship between cold surges and atmosphere dynamics is illustrated for the two most severe cold intrusions that reached the Peruvian and Bolivian Amazon in the last 20 years. 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 Peruvian Amazon es_ES
dc.subject Bolivian Amazon es_ES
dc.subject Argentina es_ES
dc.subject Cold surges es_ES
dc.subject Low-level winds es_ES
dc.subject Circulation patterns es_ES
dc.subject Self-organizing maps es_ES
dc.title Revisiting wintertime cold air intrusions at the east of the Andes: propagating features from subtropical Argentina to Peruvian Amazon and relationship with large-scale circulation patterns 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 Climate Dynamics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1007/s00382-012-1639-y es_ES

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