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dc.contributor.author
Seluchi, Marcelo Enrique
dc.contributor.author
Norte, Federico Augusto
dc.contributor.author
Satyamurty, Prakki
dc.contributor.author
Chou, Sin Chan
dc.date.available
2018-04-05T18:59:00Z
dc.date.issued
2003-06
dc.identifier.citation
Seluchi, Marcelo Enrique; Norte, Federico Augusto; Satyamurty, Prakki; Chou, Sin Chan; Analysis of Three Situations of the Foehn Effect over the Andes (Zonda Wind) Using the Eta–CPTEC Regional Model; American Meteorological Society; Weather And Forecasting; 18; 3; 6-2003; 481-501
dc.identifier.issn
0882-8156
dc.identifier.uri
http://hdl.handle.net/11336/40961
dc.description.abstract
The zonda is a warm and extremely dry wind that occurs east of the Andes Cordillera in the extratropical latitudes of South America. Its orographic origin is similar to the foehn that blows in Germany and Austria and the chinook that occurs east of the Rocky Mountains. Three typical zonda events of different categories (surface and elevated) are described, through observational and Eta–Centro de Previsa˜o de Tempo e Estudos Clima´ticos (CPTEC) model output. During the events the temperature rises sharply by 108–158C and the dewpoint temperature drops by 158–208C in an interval of a few hours. The sustained wind strength at the surface increases to 30 kt, with gusts of more than 40 kt. The episodes generally start around midday and last for about 10 h. The Eta–CPTEC model was able to forecast several aspects of the three analyzed zonda cases, such as wind strength, temperature, and humidity changes, and their starting and ending times. Some relationships between the intensity of the windward static stability and the zonda occurrence were observed. The synoptic pressure configuration resulting from frontal passages associated with depressions that moved over lower than normal latitudes preceded the zonda occurrence. Sensitivity experiments showed that if the Andes were lower, more frequent but less intense zonda episodes could be expected.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Meteorological Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Foehn Effect
dc.subject
Viento Zonda
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Analysis of Three Situations of the Foehn Effect over the Andes (Zonda Wind) Using the Eta–CPTEC Regional Model
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-16T15:30:37Z
dc.identifier.eissn
1520-0434
dc.journal.volume
18
dc.journal.number
3
dc.journal.pagination
481-501
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Boston
dc.description.fil
Fil: Seluchi, Marcelo Enrique. Instituto Nacional de Pesquisas Espaciais, Cachoeira Paulista. Centro de Previsão de Tempo e Estudos Climáticos.; Brasil
dc.description.fil
Fil: Norte, Federico Augusto. 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: Satyamurty, Prakki. Instituto Nacional de Pesquisas Espaciais, Cachoeira Paulista. Centro de Previsão de Tempo e Estudos Climáticos.; Brasil
dc.description.fil
Fil: Chou, Sin Chan. Instituto Nacional de Pesquisas Espaciais, Cachoeira Paulista. Centro de Previsão de Tempo e Estudos Climáticos.; Brasil
dc.journal.title
Weather And Forecasting
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.ametsoc.org/doi/abs/10.1175/1520-0434%282003%2918%3C481%3AAOTSOT%3E2.0.CO%3B2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1175/1520-0434(2003)18%3C481:AOTSOT%3E2.0.CO;2


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