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dc.contributor.author Espinoza, Jhan Carlo
dc.contributor.author Ronchail, Josyane
dc.contributor.author Guyot, Jean Loup
dc.contributor.author Cochonneau, Gerard
dc.contributor.author Naziano, Filizola
dc.contributor.author Lavado, Waldo
dc.contributor.author De Oliveira, Eurides
dc.contributor.author Pombosa, Rodrigo
dc.contributor.author Vauchel, Philippe
dc.coverage.spatial Cuenca del río Amazonas
dc.coverage.spatial Brazil
dc.coverage.spatial Peru
dc.coverage.spatial Bolivia
dc.coverage.spatial Colombia
dc.coverage.spatial Ecuador
dc.date.accessioned 2018-07-30T19:56:31Z
dc.date.available 2018-07-30T19:56:31Z
dc.date.issued 2008-12-04
dc.identifier.citation Espinoza, J. C., Ronchail, J., Guyot, J. L., Cochonneau, G., Naziano, F., Lavado, W., ... Vauchel, P. (2009). Spatio‐temporal rainfall variability in the Amazon basin countries (Brazil, Peru, Bolivia, Colombia, and Ecuador).==$International Journal of Climatology, 29$== (11), 1574-1594. https://doi.org/10.1002/joc.1791 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2123
dc.description.abstract Rainfall variability in the Amazon basin (AB) is analysed for the 1964–2003 period. It is based on 756 pluviometric stations distributed throughout the AB countries. For the first time it includes data from Bolivia, Peru, Ecuador, and Colombia. In particular, the recent availability of rainfall data from the Andean countries makes it possible to complete previous studies. The impact of mountain ranges on rainfall is pointed out. The highest rainfall in the AB is observed in low windward regions, and low rainfall is measured in leeward and elevated stations. Additionally, rainfall regimes are more diversified in the Andean regions than in the lowlands. Rainfall spatio‐temporal variability is studied based on a varimax‐rotated principal component analysis (PCA). Long‐term variability with a decreasing rainfall since the 1980s prevails in June–July–August (JJA) and September October–November (SON). During the rainiest seasons, i.e. December–January–February (DJF) and March–April–May (MAM), the main variability is at decadal and interannual time scales. Interdecadal variability is related to long‐term changes in the Pacific Ocean, whereas decadal variability, opposing the northwest and the south of the AB, is associated with changes in the strength of the low‐level jet (LLJ) along the Andes. Interannual variability characterizes more specifically the northeast of the basin and the southern tropical Andes. It is related to El Niño‐Southern Oscillation (ENSO) and to the sea surface temperature (SST) gradient over the tropical Atlantic. Mean rainfall in the basin decreases during the 1975–2003 period at an annual rate estimated to be − 0.32%. Break tests show that this decrease has been particularly important since 1982. Further insights into this phenomenon will permit to identify the impact of climate on the hydrology of the AB. Copyright © 2008 Royal Meteorological Society. 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 variability es_ES
dc.subject Rainfall regimes es_ES
dc.subject Amazon basin es_ES
dc.subject Andes es_ES
dc.subject South American climate es_ES
dc.subject Peru es_ES
dc.subject Ecuador es_ES
dc.subject Bolivia es_ES
dc.subject Colombia es_ES
dc.subject ENSO es_ES
dc.subject PDO es_ES
dc.subject LLJ es_ES
dc.title Spatio‐temporal rainfall variability in the Amazon basin countries (Brazil, Peru, Bolivia, Colombia, and Ecuador) 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.1791 es_ES

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