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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
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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


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