Foram feitas comparações entre a média da precipitação observada na bacia hidrográfica do Rio Piancó com a precipitação média obtida de duas diferentes formas: 1) gerada pelo modelo atmosférico por intermédio de parametrização e 2) obtida pelo balanço hídrico da atmosfera a partir de dados do modelo. O objetivo principal é de avaliar a geração de dados de precipitação por modelo atmosférico para entrada em modelos hidrológicos concentrados, tipo chuva-vazão, possibilitando previsões de vazões. Foram estabelecidos quatro períodos de dez dias para os meses de
Use of Brams Model in Obtaining the Precipitation for Input in ConcentratedHydrological Model
A B S T R A C TComparisons were made between the mean observed areal rainfall in the Piancó River basin with the mean rainfall obtained through two different ways: 1) generated by the atmospheric model through parameterization and 2) obtained by atmospheric water balance from the model data. The main purpose is to evaluate the precipitation data generated by the atmospheric model to be used as input in concentrated hydrological models, rainfall-runoff models, allowing runoff predictions . Four periods of ten days each were selected in February, 2003, 2004, 2006, and March, 2005. The mesoscale atmospheric model used was the Brazilian developments on the Regional Atmospheric Modeling System (BRAMS). Data from National Centers for Environment Prediction/National Center for Atmospheric Research (NCEP/NCAR) Reanalysis were used to make the simulations on finer scale. The results show interesting aspects in the distribution of rainfall over the basin. Rainfall data generated by BRAMS underestimated the observed data; however, it shows good correlation. The results also show that the BRAMS model is an important tool to provide input data to concentrated rainfall-runoff models.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.