Meteorologica  vol.31 número1-2; Resumen: S1850-468X2006000100002

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versión On-line ISSN 1850-468X


RUIZ, Juan José; SAULO, A. Celeste; GARCIA SKABAR, Yanina  y  SALIO, Paola V. The representation of a mesoscale convective system using RAMS model. Meteorologica [online]. 2006, vol.31, n.1-2, pp. 13-35. ISSN 1850-468X.

This work concentrates in the evaluation of RAMS model's representation of a mesoscale convective system associated with a strong low level jet event. Diverse products derived from satellite data are used to measure precipitation amounts and to characterize the system internal structure. The synoptic environment associated to system genesis and growing stages is also analyzed through the description of mechanisms favoring both, convective instability and low level convergence. RAMS model correctly represents the environmental conditions where the system develops, the accumulated precipitation fields and precipitation rates at particular moments when precipitation radar data were available. However the model fails to capture the stratiform precipitation area behind the convective one. It is considered that the approach adopted to verify model performance, seems suitable to identify which could be the main culprits for model deficiencies in the representation of rain and its distribution and consequently aid in developing a strategy to improve their prediction.

Palabras llave : Modelado numérico; Sistemas convectivos en mesoescala.

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