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Abstract:

A dry, hydrostatic, three-dimensional primitive equation model is used to evaluate the mechanical effect of the Andes mountains on the South American low-level flow (LLF). The model simulations reproduce the evolution of a baroclinic wave over the continent under winter and summer conditions. In both seasons as a consequence of the interaction between the basic flow and the Andes, northerly LLF was reproduced east of the Andes which resembles the main characteristics of the observed flow. Moreover, seasonal changes of cyclone activity have a significant impact on the location of maximum LLF and its alignment, which exhibits a NW-SE orientation during winter and more meridional orientation in the warm season.

Registro:

Documento: Artículo
Título:The influence of the Andes mountains on the South American low-level flow
Autor:Campetella, C.M.; Vera, C.S.
Filiación:Ciencias Atmosfera Oceanos, Universidad de Buenos Aires, Centro Invest Mar Atmos., Buenos Aires 1428, Argentina
Palabras clave:Mathematical models; Storms; Wave effects; Earth sciences; Geophysics; Andes mountains; Geophysics; Storms; atmospheric circulation; atmospheric dynamics; boundary layer; orographic effect; South America; Baroclinic waves; Basic flow; Cyclone activity; Mechanical effects; Model simulation; Seasonal changes; Three dimensional primitive equations; Warm seasons
Año:2002
Volumen:29
Número:17
Página de inicio:7
Página de fin:1
Título revista:Geophysical Research Letters
Título revista abreviado:Geophys. Res. Lett.
ISSN:00948276
CODEN:GPRLA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v29_n17_p7_Campetella

Referencias:

  • Berbery, E.H., Vera, C., Characteristics of the Southern Hemisphere winter storm track with filtered and unfiltered data (1996) J. Atmos. Sci., 53, pp. 468-481
  • Byerle, L., Paegle, J., Influences on the seasonal cycle of low-level flows flanking the Andes and their interannual variability (2002) VAMOS/CLIVAR/WCRP Conference on South American Low-level Jet, , http://www.clivar.org, Santa Cruz, Bolivia, (available at)
  • Figueroa, S.N., Sattyamurty, P., Silva Dias, P.L., Simulations of the summer circulation over the South American region with an eta coordinate model (1995) J. Atmos. Sci., 52, pp. 1573-1584
  • Gan, M., Rao, V.B., The influence of the Andes cordillera on transient disturbances (1994) Mon. Weather Rev., 122, pp. 1141-1157
  • Kleeman, R., A modeling study of the effect of the Andes on the summertime circulation of tropical South America (1989) J. Atmos. Sci., 46, pp. 3344-3362
  • Nogués-Paegle, J., Mo, K.C., Paegle, J., Predictability of the NCEP-NCAR reanalysis model during austral summer (1998) Mon. Weather. Rev., 126, pp. 3135-3152
  • Orlanski, I., Chang, E.K., Ageostrophic geopotential fluxes in downstream and upstream development of baroclinic waves (1993) J. Atmos. Sci., 50, pp. 212-225
  • Salio, P., Nicolini, M., Saulo, A.C., Chaco low-level jet events characterization during austral summer season by ERA reanalysis (2002) Journal of Geophysical Research, , submitted to the
  • Seluchi, M.E., Saulo, A.C., Possible mechanism yielding an explosive coastal cyclogenesis over South America: Experiments using a limited area model (1998) Aust. Met. Mag, 47, pp. 309-320
  • Silva Dias, P.L., Bonatti, J.P., Kousky, V.E., Diurnally forced tropical tropospheric circulation over South America (1987) Mon. Weather Rev., 115, pp. 1465-1478
  • Simmons, A.J., Hoskins, J., The downstream and upstream development of unstable baroclinic waves (1979) J. Atmos. Sci., 36, pp. 1239-1254
  • Solman, S., Efectos de la fricción superficial en la evolución no lineal de los mdos baroclinicos en la esfera (1995) Meteorológica, 20, pp. 37-46
  • Vera, C., Vigliarolo, P., Variations of South America summer circulation on subseasonal time scales (2000) Sixth International Conference on Southern Hemisphere Meteorology and Oceanography, , Preprints American Meteorological Society, Santiago, Chile
  • Vera, C., Vigliarolo, P.K., Berbery, E.H., Cold season synoptic scale waves over subtropical South America (2002) Mon. Weather Rev., 130, pp. 684-699

Citas:

---------- APA ----------
Campetella, C.M. & Vera, C.S. (2002) . The influence of the Andes mountains on the South American low-level flow. Geophysical Research Letters, 29(17), 7-1.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v29_n17_p7_Campetella [ ]
---------- CHICAGO ----------
Campetella, C.M., Vera, C.S. "The influence of the Andes mountains on the South American low-level flow" . Geophysical Research Letters 29, no. 17 (2002) : 7-1.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v29_n17_p7_Campetella [ ]
---------- MLA ----------
Campetella, C.M., Vera, C.S. "The influence of the Andes mountains on the South American low-level flow" . Geophysical Research Letters, vol. 29, no. 17, 2002, pp. 7-1.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v29_n17_p7_Campetella [ ]
---------- VANCOUVER ----------
Campetella, C.M., Vera, C.S. The influence of the Andes mountains on the South American low-level flow. Geophys. Res. Lett. 2002;29(17):7-1.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v29_n17_p7_Campetella [ ]