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dc.contributor.author
Humanes Fuente, Victor
dc.contributor.author
Ferrero, Maria Eugenia
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dc.contributor.author
Muñoz, Ariel A.
dc.contributor.author
González Reyes, Álvaro
dc.contributor.author
Requena Rojas, Edilson Jimmy
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dc.contributor.author
Barichivich, J.
dc.contributor.author
Inga, J.G.
dc.contributor.author
Layme Huaman, Eva Trinidad
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dc.date.available
2021-10-07T14:22:32Z
dc.date.issued
2020-09
dc.identifier.citation
Humanes Fuente, Victor; Ferrero, Maria Eugenia; Muñoz, Ariel A.; González Reyes, Álvaro; Requena Rojas, Edilson Jimmy; et al.; Two centuries of hydroclimatic variability reconstructed from tree-ring records over the Amazonian Andes of Peru; Blackwell Publishing; Journal of Geophysical Research: Atmospheres; 125; 18; 9-2020; 1-29
dc.identifier.issn
2156-2202
dc.identifier.uri
http://hdl.handle.net/11336/143108
dc.description.abstract
Almost half of the tributaries of the Amazon River originate in the tropical Andes and support large populations in mountain regions and downstream areas. However, it is difficult to assess hydroclimatic conditions or to evaluate future scenarios due to the scarcity of long, high-quality instrumental records. Data from the Global Precipitation Climatology Project (GPCP) provide a complete record since 1979 and offer a good representation of rainfall over the tropical Andes. Longer records are needed to improve our understanding of rainfall variability and summer monsoon behavior at various scales. We developed the first annually resolved precipitation reconstruction for the tropical Andes in Peru, based on tree-ring chronologies of Cedrela and Juglans species. The annual (November–October) reconstruction extends the short instrumental records back to 1817, explaining 68% of the total variance of precipitation over the 1979–2007 calibration period. The reconstruction reveals the well-documented influence of El Niño-Southern Oscillation (ENSO) on Amazon Rainfall at interannual scales (~19% of total variance) and significant multidecadal variability with alternating periods of about 40 years (~13% of rainfall variability) related to the Atlantic Multidecadal Oscillation (AMO). Both oscillatory modes can explain dry and humid periods observed within the reconstruction and are likely associated with the negative trends of rainfall in the short instrumental records and the increased drought recurrence in recent decades. Our results show that montane tropical tree rings can be used to reconstruct precipitation with exceptionally high fidelity, characterize the interannual to multidecadal variability, and identify remote forcings in the hydroclimate over the Andean Amazon Basin of Peru.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Blackwell Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AMAZONIAN MONTANE FORESTS
dc.subject
PRECIPITATION RECONSTRUCTION
dc.subject
SAMS
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SOUTH AMERICA
dc.subject
TREE RINGS
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TROPICAL ANDES
dc.subject.classification
Investigación Climatológica
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Two centuries of hydroclimatic variability reconstructed from tree-ring records over the Amazonian Andes of Peru
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-06T20:02:09Z
dc.identifier.eissn
2169-8996
dc.journal.volume
125
dc.journal.number
18
dc.journal.pagination
1-29
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington
dc.description.fil
Fil: Humanes Fuente, Victor. Pontificia Universidad Católica de Valparaíso; Chile
dc.description.fil
Fil: Ferrero, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Muñoz, Ariel A.. Pontificia Universidad Católica de Valparaíso; Chile
dc.description.fil
Fil: González Reyes, Álvaro. Universidad Mayor; Chile
dc.description.fil
Fil: Requena Rojas, Edilson Jimmy. Universidad Austral de Chile; Chile
dc.description.fil
Fil: Barichivich, J.. Universidad Austral de Chile; Chile. Laboratoire des Sciences du Climat et de l'Environnement; Francia
dc.description.fil
Fil: Inga, J.G.. Universidad Continental; Perú
dc.description.fil
Fil: Layme Huaman, Eva Trinidad. Instituto Nacional de Innovación Agraria; Argentina
dc.journal.title
Journal of Geophysical Research: Atmospheres
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JD032565
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2020JD032565
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