Show simple item record

dc.contributor.author Cerne, Silvia Bibiana
dc.contributor.author Vera, Carolina Susana
dc.date.available 2017-05-31T20:51:46Z
dc.date.issued 2011-06
dc.identifier.citation Cerne, Silvia Bibiana; Vera, Carolina Susana; Influence of the intraseasonal variability on heat waves in subtropical South America; Springer; Climate Dynamics; 36; 11; 6-2011; 2265-2277
dc.identifier.issn 0930-7575
dc.identifier.uri http://hdl.handle.net/11336/17223
dc.description.abstract The influence of the intraseasonal variability on heat wave development over subtropical South America during austral summer is analyzed. The role of the South Atlantic Convergence Zone (SACZ) on this development is documented. Results show that intraseasonal variability can explain on average at least 32% of summer temperature variance. Moreover, 73% of the heat waves in subtropical South America develop in association with an active SACZ. The analysis of pentad maps shows that warm conditions in the region under study develop in association with the strengthening of an anticyclonic anomaly, which is discernible over the subtropical regions at least 15 days before temperature peak occurrence. That circulation anomaly is embedded in a large-scale Rossby wave train extending along the South Pacific Ocean that is linked to convection anomalies at the equatorial western and central Pacific Ocean. In addition, the development of the anticyclonic circulation over subtropical South America appears to be strengthened by the subsidence conditions promoted by the active SACZ, which result in temperature rise in the subtropical region under relatively dry conditions. On the other hand, during the last 2 days of evolution, SACZ activity weakens and the progressive temperature rise in the region is dominated by warmer and moister air being anomalously advected from the north. Results confirm the important role that SACZ activity on intraseasonal time scales has in inducing persistent circulation anomalies at the subtropical regions that can result in the development of persistent heat waves, and very extreme daily temperature.
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 Intraseasonal variability
dc.subject South America
dc.subject Temperature
dc.subject Heat waves
dc.subject SACZ
dc.subject Warm season 1
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 Influence of the intraseasonal variability on heat waves in subtropical 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 2017-05-31T19:43:47Z
dc.identifier.eissn 1432-0894
dc.journal.volume 36
dc.journal.number 11
dc.journal.pagination 2265-2277
dc.journal.pais Alemania
dc.journal.ciudad Berlin
dc.description.fil Fil: Cerne, Silvia Bibiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
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 Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
dc.journal.title Climate Dynamics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00382-010-0812-4
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00382-010-0812-4


Archivos asociados

Icon
Blocked Acceso no disponible

This item appears in the following Collection(s)

  • Articulos(CIMA) [196]
    Articulos de CENTRO DE INVESTIGACIONES DEL MAR Y LA ATMOSFERA

Show simple item record

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)