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Universidade Federal do Ceara (2007)

Estudo de sensibilidade do modelo Brams variáveis dos parâmetros de superfície do Nordeste do Brasil

COSTA, Roner Ferreira da.

Titre : Estudo de sensibilidade do modelo Brams variáveis dos parâmetros de superfície do Nordeste do Brasil

Study of sensibility of the model BRAMS to the variations of the surface parameters in the northeast of Brazil

Auteur : COSTA, Roner Ferreira da.

Université de soutenance : Universidade Federal do Ceara

Grade : Mestre 2007

Résumé
In this work a numeric experiment was accomplished with the model BRAMS (Brazilian Regional Atmospheric Modeling System) with the purpose of studying the changes in the surface variables due to the variations of the surface parameters as soil moisture and the vegetation class in the Northeast of Brazil which are input in BRAMS. They were made three simulations, the first (simulation control) it was initialized with the standard files of the own model, the second simulation was maintained the class of vegetation pattern (Deciduous shrub) and just altering the soil moisture and the third simulation alters the vegetation for semi-desert besides reducing the humidity of the soil. Also a validation of the model was accomplished with a soil humidity made calculations starting from observed data of precipitation. It is verified that the humidity of the soil and the vegetation have a strong influences on the climate of the Northeast area of Brazil ; however it is not very significant in the weather forecast.

Mots clés : ParÃmetros de superfÃcie ; classes de vegetaÃÃo ; umidade do solo ; surface parameters ; class of vegetation ; humidity of the soil

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Page publiée le 21 juin 2013, mise à jour le 12 mars 2019