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dc.contributor.author Junquas, C.
dc.contributor.author Vera, Carolina Susana
dc.contributor.author Li, L.
dc.contributor.author Le Treut, H.
dc.date.available 2016-02-26T20:44:01Z
dc.date.issued 2013-04
dc.identifier.citation Junquas, C.; Vera, Carolina Susana; Li, L.; Le Treut, H.; Impact of projected SST changes on summer rainfall in southeastern South America; Springer; Climate Dynamics; 40; 7; 4-2013; 1569-1589
dc.identifier.issn 0930-7575
dc.identifier.uri http://hdl.handle.net/11336/4487
dc.description.abstract Recent studies have shown that global warming and associated sea-surface temperature (SST) changes may trigger an important rainfall increase in Southeastern South America (SESA) during the austral summer (December-January-February, DJF). The goal of this paper is to provide some insight into processes which may link global and SESA changes. For this purpose, a “two-way nesting” system coupling interactively the regional and global versions of the LMDZ4 atmospheric model is used to study the response to prescribed SST changes. The regional model is a variable grid version of the global model, with a zoom focused over South America. An ensemble of simulations forced by distinct patterns of DJF SST changes has been carried out using a decomposition of full SST changes into their longitudinal and latitudinal components. The full SST changes are based on projections for the end of the twenty-first century from a multi-model ensemble of WCRP/CMIP3. Results confirm the presence of a major rainfall dipole structure, characterized by an increase in SESA and a decrease in the South Atlantic Convergence Zone region. Rainfall changes found in the WCRP/CMIP3 models are largely explained as a response of this dipole structure to the zonally-asymmetric (or longitudinal) component of SST changes. The rainfall response to the zonal-mean (or latitudinal) SST changes (including the global warming signal itself) shows an opposite contribution. The processes explaining the role of zonally asymmetric SST changes involve remote effects of SST warming over the equatorial Indian and Pacific oceans inducing an atmospheric wave-train extended across the South Pacific into South America.
dc.format application/pdf
dc.language.iso eng
dc.publisher Springer
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject South America Climate
dc.subject Rainfall Changes
dc.subject Two-Way Nesting System
dc.subject Sea Surface Temperature Projections
dc.subject.classification Investigación Climatológica
dc.subject.classification Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Impact of projected SST changes on summer rainfall in southeastern South America
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-03-30 10:35:44.97925-03
dc.journal.volume 40
dc.journal.number 7
dc.journal.pagination 1569-1589
dc.journal.pais Alemania
dc.journal.ciudad Berlin
dc.description.fil Fil: Junquas, C.. Laboratoire de Météorologie Dynamique; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera; Argentina
dc.description.fil Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera; Argentina
dc.description.fil Fil: Li, L.. Laboratoire de Météorologie Dynamique; Francia
dc.description.fil Fil: Le Treut, H.. Laboratoire de Météorologie Dynamique; Francia
dc.journal.title Climate Dynamics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007/s00382-013-1695-y
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00382-013-1695-y
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/issn/0930-7575


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    Articulos de CENTRO DE INVESTIGACIONES DEL MAR Y LA ATMOSFERA

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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)