A study of ratings generated by the model simulated precipitation RegCM4, using the
parameterization GFC and MIT to reproduce the seasonal distribution of rainfall
observed during summer / autumn of 1982 / 1983 (dry year) and 1988/1989 (rainy
year) on the Northeast Brazil (NEB) using 30 km spatial resolution. Were used in this
work 24 rounds corresponding to the seasonal rainfall in summer and autumn of the
year, dry summer and rainy autumn of the year, with 12 rounds was used in the
convective parameterization GFC related to the G1, G2 and G3 for two years ( La
Niña and El Niño) and 12 rounds using the convective parameterization MIT, related
to the G1, G2 and G3. In general these results indicate that simulations using the
parameterization of RegCM4 GFC and MIT showed a systematic error of
underestimation of precipitation in almost all regions of Northeastern Brazil. Since the
simulation was that more was seen approaching the MIT, the field of grid G2.
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