Hydroclimate variability of the northwestern Amazon Basin near the Andean foothills of Peru related to the South American Monsoon System during the last 1600 years

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dc.contributor.authorApaéstegui Campos, James Emiliano
dc.contributor.authorCruz, F. W.
dc.contributor.authorSifeddine, A.
dc.contributor.authorVuille, M.
dc.contributor.authorEspinoza, Jhan Carlo
dc.contributor.authorGuyot, J. L.
dc.contributor.authorKhodri, M.
dc.contributor.authorStrikis, N.
dc.contributor.authorSantos, R. V.
dc.contributor.authorCheng, H.
dc.contributor.authorEdwards, L.
dc.contributor.authorCarvalho, E.
dc.contributor.authorSantini, W.
dc.coverage.spatialAmérica del Sur
dc.coverage.spatialCuenca del río Amazonas
dc.coverage.spatialAmazonía
dc.date.accessioned2018-09-11T18:54:54Z
dc.date.available2018-09-11T18:54:54Z
dc.date.issued2014-11-19
dc.description.abstractIn this paper we explore a speleothem δ ¹⁸O record from Palestina cave, northwestern Peru, at a site on the eastern side of the Andes cordillera, in the upper Amazon Basin. The δ ¹⁸O record is interpreted as a proxy for South American Summer Monsoon (SASM) intensity and allows the reconstruction of its variability during the last 1600 years. Two periods of anomalous changes in the climate mean state corresponding to the Medieval Climate Anomaly (MCA) and the Little Ice Age (LIA) periods identified in the Northern Hemisphere are recognized in the record, in which decreased and increased SASM activity, respectively, have been documented. Variations in SASM activity between the MCA and the LIA seem to be larger over the northern part of the continent, suggesting a latitudinal dependence of the MCA footprint. Our results, based on time series, composite and wavelet analyses, suggest that the Atlantic Multidecadal Oscillation (AMO) plays an relevant role for SASM modulation on multidecadal scales (∼ 65 years), especially during dry periods such as the MCA. Composite analyses, applied to evaluate the influence of the AMO on the Palestina cave δ¹⁸O and other δ¹⁸O-derived SASM reconstructions, allow insight into the spatial footprints of the AMO over tropical South America and highlight differences between records during key studied periods. This work also reveals that replicating regional climate signals from different sites, and using different proxies is absolutely essential for a comprehensive understanding of past changes in SASM activity.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationApaéstegui, J., Cruz, F. W., Sifeddine, A., Vuille, M., Espinoza, J. C., Guyot, J. L., ... Santini, W. (2014). Hydroclimate variability of the northwestern Amazon Basin near the Andean foothills of Peru related to the South American Monsoon System during the last 1600 years.==$Climate of the Past, 10$==(6), 1967–1981. https://doi.org/10.5194/cp-10-1967-2014es_ES
dc.identifier.doihttps://doi.org/10.5194/cp-10-1967-2014es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalClimate of the Pastes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2918
dc.language.isoenges_ES
dc.publisherEuropean Geosciences Union (EGU)es_ES
dc.relation.ispartofurn:issn:1814-9324
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttps://creativecommons.org/licences/by/4.0/es_ES
dc.subjectSpeleothemses_ES
dc.subjectHydrometeorologyes_ES
dc.subjectClimatees_ES
dc.subjectMonsoones_ES
dc.subjectClimatologyes_ES
dc.subjectPaleoclimatologyes_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#1.05.10es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.11es_ES
dc.titleHydroclimate variability of the northwestern Amazon Basin near the Andean foothills of Peru related to the South American Monsoon System during the last 1600 yearses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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