Abstract

MARTINS COSTA DO AMARAL, Lia; HOMANN, C. T; PINHO, V  and  YAMASAKI, Y. Mesoscale forescasting of an event of novenber 2008 in Santa Catharina. Meteorologica [online]. 2012, vol.37, n.2, pp.57-65. ISSN 1850-468X.

The large availability of water vapor at low levels of the atmosphere, advected into the coastal region of Santa Catharina State by the Atlantic Ocean semi-stationary anticyclone, provided the frequent and copious rainfall during the November, 2008. One of the most extreme event occurred in Santa Catharina coastal zone, when a quite strong blocking formed at high levels of the atmosphere is explored processing both, the MM5 and WRF mesoscale models. These models were processed with very high spatial resolution domains, covering the entire region affected by the severe event. The sea surface temperature field revealed that there was a large core on Atlantic waters with quite high temperatures along the coast of Santa Catharina, which enhanced the vertical integrated latent heat supply into the continental region by the winds. The models forecasting results showed consistent results with the observations, as well as an indication that coherences are directly related to the horizontal resolution of the models configurations.

Keywords : Mesoscale; MM5; WRF.

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