Environment associated with deep moist convection under SALLJ conditions a case study

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The present work focuses on the study of the environmental conditions preceding the development of a group of subtropical mesoscale convective systems over central and northern Argentina on 6-7 February 2003 during the South American Low Level Jet Experiment. This period was characterized by an extr...

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Detalles Bibliográficos
Otros Autores: Borque, Paloma, Salio, Paola, Nicolini, Matilde, García Skabar, Yanina
Formato: Artículo
Lenguaje:Inglés
Materias:
DEEP CONVECTION
FIELD EXPERIMENTS
JETS
MESOSCALE SYSTEMS
SOUTH AMERICA
SUBTROPICS
FIELD EXPERIMENT
MESO-SCALE SYSTEMS
ATMOSPHERIC MOVEMENTS
NATURAL CONVECTION
STORMS
TROPICS
EXPERIMENTS
ADVECTION
AIR MASS
AIR TEMPERATURE
ATMOSPHERIC CONVECTION
CONVECTIVE SYSTEM
JET
MESOSCALE METEOROLOGY
OROGRAPHIC EFFECT
RELATIVE HUMIDITY
WIND FIELD
WIND FORCING
ARGENTINA
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2010Borque.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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520 |a The present work focuses on the study of the environmental conditions preceding the development of a group of subtropical mesoscale convective systems over central and northern Argentina on 6-7 February 2003 during the South American Low Level Jet Experiment. This period was characterized by an extreme northerly low-level flow along the eastern Andes foothills [South American low-level jet [SALLJ]]. The entire studied episode was dominated by the presence of a very unstable air mass over northern Argentina and a frontal zone near 40°S. The SALLJ generated an important destabilization of the atmosphere due to the strong humidity and differential temperature advection. Orography provided an extra lifting motion to the configuration of the regional wind field, which was efficient in forcing the initiation of convection. Once convection developed, it moved and regenerated in regions where the convective instability was horizontally homogeneous and stronger. 
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773 |t Weather and Forecasting  |g Vol.25, no.3 (2010), p.970-984 
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900 |a ^aBorque^bP.^tDepartamento de Ciencias de la Atmósfera y los Océanos, FCEN, University of Buenos Aires, Buenos Aires, Argentina 
900 |a ^aSalio^bP.^tCentro de Investigaciones del Mar y la Atmósfera, CONICET, University of Buenos Aires, Buenos Aires, Argentina 
900 |a ^aNicolini^bM.^tNational Weather Service, Facultad de Agronomía, University of Buenos Aires, Buenos Aires, Argentina 
900 |a ^aSkabar^bY.G.^tDepartment of Atmospheric and Oceanic Sciences, McGill University, Montreal, QC, Canada 
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900 |a The present work focuses on the study of the environmental conditions preceding the development of a group of subtropical mesoscale convective systems over central and northern Argentina on 6-7 February 2003 during the South American Low Level Jet Experiment. This period was characterized by an extreme northerly low-level flow along the eastern Andes foothills [South American low-level jet [SALLJ]]. The entire studied episode was dominated by the presence of a very unstable air mass over northern Argentina and a frontal zone near 40°S. The SALLJ generated an important destabilization of the atmosphere due to the strong humidity and differential temperature advection. Orography provided an extra lifting motion to the configuration of the regional wind field, which was efficient in forcing the initiation of convection. Once convection developed, it moved and regenerated in regions where the convective instability was horizontally homogeneous and stronger. 
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