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dc.contributor.author
Saulo, Andrea Celeste
dc.contributor.author
Ferreira, Lorena Judith
dc.contributor.author
Nogués Paegle, Julia
dc.contributor.author
Seluchi, Marcelo Enrique
dc.contributor.author
Ruiz, Juan Jose
dc.date.available
2017-06-08T19:32:29Z
dc.date.issued
2010-07
dc.identifier.citation
Saulo, Andrea Celeste; Ferreira, Lorena Judith; Nogués Paegle, Julia; Seluchi, Marcelo Enrique; Ruiz, Juan Jose; Land-Atmosphere Interactions during a Northwestern Argentina Low Event; American Meteorological Society; Monthly Energy Review; 138; 7-2010; 2481-2498
dc.identifier.issn
0027-0644
dc.identifier.uri
http://hdl.handle.net/11336/17807
dc.description.abstract
The impact of changes in soil moisture in subtropical Argentina in rainfall distribution and low-level circulation is studied with a state-of-the-art regional model in a downscaling mode, with different scenarios of soil moisture for a 10-day period. The selected case (starting 29 January 2003) was characterized by a northwestern Argentina low event associated with well-defined low-level northerly flow that extended east of the Andes over subtropical latitudes. Four tests were conducted at 40-km horizontal resolution with 31 sigma levels, decreasing and increasing the soil moisture initial condition by 50% over the entire domain, and imposing a 50% reduction over northwest Argentina and 50% increase over southeast South America. A control run with NCEP/GDAS initial conditions was used to assess the impact of the different soil moisture configurations. It was found that land surface interactions are stronger when soil moisture is decreased, with a coherent reduction of precipitation over southern South America. Enhanced northerly winds result form an increase in the zonal gradient of pressure at low levels. In contrast, when soil moisture is increased, smaller circulation changes are found, though there appears to be a local feedback effect between the land and precipitation The combined effects of changes in the circulation and in local stratification induced by soil wetness modifications, through variations in evaporation and CAPE, are in agreement with what has been found by other studies, resulting in coherent modifications of precipitation when variations of CAPE and moisture flux convergence mutually reinforce.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Meteorological Society
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Soilmoisture
dc.subject
Southamerica
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Land-Atmosphere
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Land-Atmosphere Interactions during a Northwestern Argentina Low Event
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-31T19:44:21Z
dc.journal.volume
138
dc.journal.pagination
2481-2498
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Massachusetts
dc.description.fil
Fil: Saulo, Andrea Celeste. 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: Ferreira, Lorena Judith. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Nogués Paegle, Julia. University of Utah; Estados Unidos
dc.description.fil
Fil: Seluchi, Marcelo Enrique. Centro de Previsao de Tempo e Estudos Climaticos; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Ruiz, Juan Jose. 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
Monthly Energy Review
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1175/2010MWR3227.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.ametsoc.org/doi/abs/10.1175/2010MWR3227.1


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  • Articulos(CIMA) [203]
    Articulos de CENTRO DE INVESTIGACIONES DEL MAR Y LA ATMOSFERA

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