The forest effects on the isotopic composition of rainfall in the northwestern Amazon Basin

Simple item page
dc.contributor.authorAmpuero, A.
dc.contributor.authorStríkis, N. M.
dc.contributor.authorApaéstegui Campos, James Emiliano
dc.contributor.authorVuille, M.
dc.contributor.authorNovello, V. F.
dc.contributor.authorEspinoza, J. C.
dc.contributor.authorCruz, F. W.
dc.contributor.authorVonhof, H.
dc.contributor.authorMayta, V. C.
dc.contributor.authorMartins, V. T. S.
dc.contributor.authorCordeiro, R. C.
dc.contributor.authorAzevedo, V.
dc.contributor.authorSifeddine, A.
dc.coverage.spatialAmazonas
dc.date.accessioned2020-02-11T10:39:13Z
dc.date.available2020-02-11T10:39:13Z
dc.date.issued2020-02-27
dc.description.abstractIn the Amazon basin, intense precipitation recycling across the forest significantly modifies the isotopic composition of rainfall (δ¹⁸O, δD). In the tropical hydrologic cycle, such an effect can be identified through deuterium excess (dxs), yet it remains unclear what environmental factors control dxs, increasing the uncertainty of dxs‐based paleoclimate reconstructions. Here we present a 4‐year record of the isotopic composition of rainfall, monitored in the northwestern Amazon basin. We analyze the isotopic variations as a function of the air mass history, based on atmospheric back trajectory analyses, satellite observations of precipitation upstream, leaf area index, and simulated moisture recycling along the transport pathway. We show that the precipitation recycling in the forest exerts a significant control on the isotopic composition of precipitation in the northwestern Amazon basin, especially on dxs during the dry season (r = 0.71). Applying these observations to existing speleothem and pollen paleorecords, we conclude that winter precipitation increased after the mid‐Holocene, as the expansion of the forest allowed for more moisture recycling. Therefore, forest effects should be considered when interpreting paleorecords of past precipitation changes.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationAmpuero, A., Stríkis, N. M., Apaéstegui, J., Vuille, M., Novello, V. F., Espinoza, J. C., ... Sifeddine, A. (2020). The forest effects on the isotopic composition of rainfall in the northwestern Amazon Basin.==$Journal of Geophysical Research: Atmospheres, 125$==(4), 2019JD031445. https://doi.org/10.1029/2019JD031445es_ES
dc.identifier.doihttps://doi.org/10.1029/2019JD031445es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Geophysical Research: Atmosphereses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/4754
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Union (AGU)es_ES
dc.relation.ispartofurn:issn:2169-897X
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectWater stable isotopologueses_ES
dc.subjectDeuterium excesses_ES
dc.subjectSpeleothemes_ES
dc.subjectFluid inclusiones_ES
dc.subjectHolocenees_ES
dc.subjectAmazones_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.titleThe forest effects on the isotopic composition of rainfall in the northwestern Amazon Basines_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

Files

License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Arbitrados