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dc.contributor.author
Saito, Kazuyuki
dc.contributor.author
Trombotto, Dario Tomas
dc.contributor.author
Yoshikawa, Kenji
dc.contributor.author
Mori, Junko
dc.contributor.author
Sone, Toshio
dc.contributor.author
Marchenko, Sergey
dc.contributor.author
Romanovsky, Vladimir
dc.contributor.author
Walsh, John
dc.contributor.author
Hendricks, Amy
dc.contributor.author
Bottegal, Estefania Laura
dc.date.available
2018-09-12T20:09:15Z
dc.date.issued
2016-01
dc.identifier.citation
Saito, Kazuyuki; Trombotto, Dario Tomas; Yoshikawa, Kenji; Mori, Junko; Sone, Toshio; et al.; Late Quaternary Permafrost Distributions Downscaled for South America: Examinations of GCM-based Maps with Observations; John Wiley & Sons Ltd; Permafrost And Periglacial Processes; 27; 1; 1-2016; 43-55
dc.identifier.issn
1045-6740
dc.identifier.uri
http://hdl.handle.net/11336/59433
dc.description.abstract
High-resolution maps of potential frozen ground distribution in South America have been produced for the present day (0ka) and the Last Glacial Maximum (21ka). Surface air temperature outputs from global climate models (GCMs) of the recent Paleoclimate Model Intercomparison Project were used for the reconstructions, and then downscaled from regional to local scales, with the help of a 1 arc-minute digital elevation model. Their validity was examined using fieldwork-based evidence and knowledge. The downscaled map for the present day successfully reproduces the presence of permafrost in the Andes, a task at which original coarse-resolution GCM output maps failed. The map also shows close correspondence with instrumental observations. Similarly, the downscaled distribution of 21ka frozen ground shows overall consistency with geomorphological and/or palaeoenvironmental reconstructions. Areal coverage of potential permafrost for all of South America is estimated at 139 000km2 for today and 435 000km2 for 21ka, mostly along the Andean mountain ranges. Regional inspections, however, show divergence from field-observed features, attributed to microclimatic effects and past permafrost conditions. For southern Patagonia, and especially the eastern lowlands, the diagnosed lower limit for permafrost is about 1000m asl, whereas field evidence at lower altitudes indicates the presence of either permafrost or deep seasonal frost.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Downscaling
dc.subject
Geocryogeneic Processes, Pmip3
dc.subject
Global Cliamte Modelling
dc.subject
Paleo-Permafrost
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South America
dc.subject.classification
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
Late Quaternary Permafrost Distributions Downscaled for South America: Examinations of GCM-based Maps with Observations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-12T13:59:18Z
dc.journal.volume
27
dc.journal.number
1
dc.journal.pagination
43-55
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Saito, Kazuyuki. University Of Alaska; Estados Unidos. Japan Agency for Marine‐Earth Science and Technology; Japón
dc.description.fil
Fil: Trombotto, Dario Tomas. 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: Yoshikawa, Kenji. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Mori, Junko. Japan Agency for Marine‐Earth Science and Technology; Japón. National Institute of Polar Research; Japón
dc.description.fil
Fil: Sone, Toshio. Hokkaido University; Japón
dc.description.fil
Fil: Marchenko, Sergey. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Romanovsky, Vladimir. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Walsh, John. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Hendricks, Amy. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Bottegal, Estefania Laura. 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
Permafrost And Periglacial Processes
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1002/ppp.1863
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ppp.1863
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