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dc.contributor.author
González Reyes, Álvaro
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McPhee, James
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Christie, Duncan A.
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Quesne, Carlos Le
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Szejner, Paul
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Masiokas, Mariano Hugo
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Villalba, Ricardo
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Muñoz, Ariel A.
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Crespo, Sebastián Andrés
dc.date.available
2018-09-19T18:12:40Z
dc.date.issued
2017-07
dc.identifier.citation
González Reyes, Álvaro; McPhee, James; Christie, Duncan A.; Quesne, Carlos Le; Szejner, Paul; et al.; Spatiotemporal variations in hydroclimate across the Mediterranean Andes (30°-37°S) since the early twentieth century; American Meteorological Society; Journal Of Hydrometeorology; 18; 7; 7-2017; 1929-1942
dc.identifier.issn
1525-755X
dc.identifier.uri
http://hdl.handle.net/11336/60263
dc.description.abstract
In the Mediterranean Andes region (MA; 30°-37°S), the main rivers are largely fed by melting snowpack and provide freshwater to around 10 million people on both sides of the Andes Mountains. Water resources in the MA are under pressure because of the extensive development of industrial agriculture and mining activities. This pressure is increasing as the region faces one of its worst recorded droughts. Previous studies have pointed to El Niño-Southern Oscillation (ENSO) as the main climatic force impacting the MA. However, the role of decadal and multidecadal climate variability, their spatial patterns, and the recurrence of long-term droughts remains poorly studied. In an attempt to better understand these factors, spatial and temporal patterns of hydroclimatic variability are analyzed using an extensive database of streamflow, precipitation, and snowpack covering the period between 1910 and 2011. These analyses are based on the combination of correlation, principal components, and kernel estimation techniques. Despite a general common pattern across the MA, the results presented here identify two hydroclimatic subregions, located north and south of 34°S. While the interannual variability associated with ENSO is slightly stronger north of 34°S, the variability associated with the Pacific decadal oscillation (PDO) and/or the interdecadal Pacific oscillation (IPO) index shows similar patterns in both regions. However, variations produced by the IPO forcing seem to be greater in the southern subregion since 1975. The estimations presented here on drought recurrence reveal a generalized increase in dry extremes since the 1950s. These findings suggest that the northern MA is more vulnerable to changes in hydrology and climate than the southern MA.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Meteorological Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Climate Variability
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Decadal Variability
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South America
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Streamflow
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Spatiotemporal variations in hydroclimate across the Mediterranean Andes (30°-37°S) since the early twentieth century
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-12T17:33:16Z
dc.journal.volume
18
dc.journal.number
7
dc.journal.pagination
1929-1942
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Boston
dc.description.fil
Fil: González Reyes, Álvaro. Universidad Austral de Chile; Chile
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Fil: McPhee, James. Universidad de Chile; Chile
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Fil: Christie, Duncan A.. Universidad de Chile; Chile. Universidad Austral de Chile; Chile
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Fil: Quesne, Carlos Le. Universidad Austral de Chile; Chile
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Fil: Szejner, Paul. University of Arizona; Estados Unidos
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Fil: Masiokas, Mariano Hugo. 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
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Fil: Villalba, Ricardo. 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
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Fil: Muñoz, Ariel A.. Pontificia Universidad Católica de Valparaíso; Chile
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Fil: Crespo, Sebastián Andrés. 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.journal.title
Journal Of Hydrometeorology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1175/JHM-D-16-0004.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.ametsoc.org/doi/10.1175/JHM-D-16-0004.1
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