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dc.contributor.author Junquas, C.
dc.contributor.author Li, L.
dc.contributor.author Vera, Carolina Susana
dc.contributor.author Le Treut, H.
dc.contributor.author Takahashi, K.
dc.date.available 2018-09-07T18:43:41Z
dc.date.issued 2016-06
dc.identifier.citation Junquas, C.; Li, L.; Vera, Carolina Susana; Le Treut, H.; Takahashi, K.; Influence of South America orography on summertime precipitation in Southeastern South America. Climate Dynamics; Springer; Climate Dynamics; 46; 11-12; 6-2016; 3941-3963
dc.identifier.issn 0930-7575
dc.identifier.uri http://hdl.handle.net/11336/58778
dc.description.abstract Impacts of the main South American orographic structures (the Andes, the Brazilian Plateau and the Guiana shield) on the regional climate and associated global teleconnection are investigated through numerical experiments in which some of these features are suppressed. Simulations are performed with a ‘‘two-way nesting’’ system coupling interactively the regional and global versions of the LMDZ4 atmospheric general circulation model. At regional scale, the simulations confirm previous studies, showing that both the Andes and the Brazilian Plateau exert a control on the position and strength of the South Atlantic convergence zone (SACZ), mainly through their impact on the low-level jet and the coastal branch of the subtropical anticyclones. The northern topography of South America appears to be crucial to determine the leading mode of rainfall variability in eastern South America, which manifests itself as a dipole-like pattern between Southeastern South America and the SACZ region. The suppression of South America orography also shows global-scale effects, corresponding to an adjustment of the global circulation system. Changes in atmospheric circulation and precipitation are found in remote areas on the globe, being the consequences of various teleconnection mechanisms. When the Brazilian Plateau and the Andes are suppressed, there is a decrease of precipitation in the SACZ region, associated with a weakening of the large-scale ascendance. Changes are described in terms of anomalies in the Walker circulation, meridional displacements of the mid-latitude jet stream, Southern annular mode anomalies and modifications of Rossby wave train teleconnection processes.
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 GLOBAL TELECONNECTION PROCESSES
dc.subject OROGRAPHY INFLUENCE
dc.subject SOUTH AMERICA OROGRAPHY
dc.subject SUMMER PRECIPITATION
dc.subject TWO-WAY NESTING SYSTEM
dc.subject.classification Meteorología y Ciencias Atmosféricas
dc.subject.classification Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Influence of South America orography on summertime precipitation in Southeastern South America. Climate Dynamics
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-09-07T13:44:09Z
dc.journal.volume 46
dc.journal.number 11-12
dc.journal.pagination 3941-3963
dc.journal.pais Alemania
dc.journal.ciudad Berlin
dc.description.fil Fil: Junquas, C.. Instituto Geofísico del Perú ; Perú. Centre National de la Recherche Scientifique; Francia
dc.description.fil Fil: Li, L.. Institut Pierre Simon Laplace; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
dc.description.fil Fil: Le Treut, H.. Institut Pierre Simon Laplace; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil Fil: Takahashi, K.. Instituto Geofísico del Perú ; Perú
dc.journal.title Climate Dynamics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1007/s00382-015-2814-8
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00382-015-2814-8
dc.conicet.fuente individual


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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)