Mostrar el registro sencillo del ítem Espinoza, Jhan Carlo Chávez Jara, Steven Paul Ronchail, Josyane Junquas, Clémentine Takahashi, Ken Lavado, Waldo
dc.coverage.spatial Cuenca del río Amazonas
dc.coverage.spatial Amazonía 2018-09-10T16:44:18Z 2018-09-10T16:44:18Z 2015-04-17
dc.identifier.citation Espinoza, J. C., Chavez, S., Ronchail, J., Junquas, C., Takahashi, K., & Lavado, W. (2015). Rainfall hotspots over the southern tropical Andes: spatial distribution, rainfall intensity, and relations with large‐scale atmospheric circulation.==$Water Resources Research, 51$==(5), 3459-3475. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract The Andes/Amazon transition is among the rainiest regions of the world and the interactions between large‐scale circulation and the topography that determine its complex rainfall distribution remain poorly known. This work provides an in‐depth analysis of the spatial distribution, variability, and intensity of rainfall in the southern Andes/Amazon transition, at seasonal and intraseasonal time scales. The analysis is based on comprehensive daily rainfall data sets from meteorological stations in Peru and Bolivia. We compare our results with high‐resolution rainfall TRMM‐PR 2A25 estimations. Hotspot regions are identified at low elevations in the Andean foothills (400–700 masl) and in windward conditions at Quincemil and Chipiriri, where more than 4000 mm rainfall per year are recorded. Orographic effects and exposure to easterly winds produce a strong annual rainfall gradient between the lowlands and the Andes that can reach 190 mm/km. Although TRMM‐PR reproduces the spatial distribution satisfactorily, it underestimates rainfall by 35% in the hotspot regions. In the Peruvian hotspot, exceptional rainfall occurs during the austral dry season (around 1000 mm in June–July–August; JJA), but not in the Bolivian hotspot. The direction of the low‐level winds over the Andean foothills partly explains this difference in the seasonal rainfall cycle. At intraseasonal scales in JJA, we found that, during northerly wind regimes, positive rainfall anomalies predominate over the lowland and the eastern flank of the Andes, whereas less rain falls at higher altitudes. On the other hand, during southerly regimes, rainfall anomalies are negative in the hotspot regions. The influence of cross‐equatorial winds is particularly clear below 2000 masl. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:0043-1397
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Rainfall es_ES
dc.subject Andes‐Amazon es_ES
dc.subject Extreme events es_ES
dc.subject Atmospheric circulation es_ES
dc.title Rainfall hotspots over the southern tropical Andes: spatial distribution, rainfall intensity, and relations with large‐scale atmospheric circulation es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.subject.ocde es_ES
dc.subject.ocde es_ES
dc.identifier.journal Water Resources Research es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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