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Abstract:

Deep convection in the Tunuyán Valley region (33°-34°S, 69°-70°W) on the eastern side of the highest peaks of the Andes Mountains is sometimes associated with damaging hail. Understanding the physical mechanisms responsible for the occurrence of deep convection in that region is therefore a central part of the development of hail suppression projects. In this paper, a case of deep convection that occurred on 22 January 2001 is studied in detail through a combined analysis of radar, satellite, and radiosonde data and numerical simulations using a nonhydrostatic mesoscale atmospheric (Meso-NH) model. The time evolution and stability characteristics are first documented using the data. In order to get insight into the main causes for the deep convection event, numerical simulations of that day were performed. These results are compared with the results corresponding to conditions of 4 January 2001 when no deep convection occurred. The comparison between the 2 days strongly suggests that the deep convection event occurred because of the simultaneous presence of anabatic winds, accumulation of moist enthalpy, and the stability conditions. The present results should be helpful in designing future observational programs in the region. © 2004 American Meteorological Society.

Registro:

Documento: Artículo
Título:A deep convection event above the Tunuyán Valley near the Andes Mountains
Autor:de la Torre, A.; Daniel, V.; Tailleux, R.; Teitelbaum, H.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Nat., Universidad de Buenos Aires, Pabellon I, Buenos Aires 1428, Argentina
Lab. de Meteorol. Dynamique du CNRS, Ecole Normale Superiéure, Paris, France
Lab. de Meteorol. Dynamique du CNRS, Universite Pierre et Marie Curie, Paris, France
Palabras clave:Computer simulation; Enthalpy; Precipitation (meteorology); Radar; Satellite communication systems; Wind; Deep convection; Hail suppression; Nonhydrostatic mesoscale atmospheric models; Radiosonde data; Heat convection; convection; hail; numerical model; precipitation (climatology); severe weather; Andes; South America
Año:2004
Volumen:132
Número:9
Página de inicio:2259
Página de fin:2267
DOI: http://dx.doi.org/10.1175/1520-0493(2004)132<2259:ADCEAT>2.0.CO;2
Título revista:Monthly Weather Review
Título revista abreviado:Mon. Weather Rev.
ISSN:00270644
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00270644_v132_n9_p2259_delaTorre

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Citas:

---------- APA ----------
de la Torre, A., Daniel, V., Tailleux, R. & Teitelbaum, H. (2004) . A deep convection event above the Tunuyán Valley near the Andes Mountains. Monthly Weather Review, 132(9), 2259-2267.
http://dx.doi.org/10.1175/1520-0493(2004)132<2259:ADCEAT>2.0.CO;2
---------- CHICAGO ----------
de la Torre, A., Daniel, V., Tailleux, R., Teitelbaum, H. "A deep convection event above the Tunuyán Valley near the Andes Mountains" . Monthly Weather Review 132, no. 9 (2004) : 2259-2267.
http://dx.doi.org/10.1175/1520-0493(2004)132<2259:ADCEAT>2.0.CO;2
---------- MLA ----------
de la Torre, A., Daniel, V., Tailleux, R., Teitelbaum, H. "A deep convection event above the Tunuyán Valley near the Andes Mountains" . Monthly Weather Review, vol. 132, no. 9, 2004, pp. 2259-2267.
http://dx.doi.org/10.1175/1520-0493(2004)132<2259:ADCEAT>2.0.CO;2
---------- VANCOUVER ----------
de la Torre, A., Daniel, V., Tailleux, R., Teitelbaum, H. A deep convection event above the Tunuyán Valley near the Andes Mountains. Mon. Weather Rev. 2004;132(9):2259-2267.
http://dx.doi.org/10.1175/1520-0493(2004)132<2259:ADCEAT>2.0.CO;2