Estimativa de precipitação por radar meteorológico: caracterização e avaliação de relações Z R

Abstract

In the Amazon, precipitation measures are scarce, sometimes due to lack of resources, sometimes due to the extensive area of the Amazon. For this reason, other forms of precipitation registration are of fundamental importance, since its knowledge allows to determine the hydrological cycle of the region, such as the monitoring of floods of rivers and streams. In this sense, the work sought to use the weather radar as a tool to estimate the rain with the objective of proposing a Z R ratio for precipitation estimation for the Manaus weather radar coverage region. Methods were employed to characterize a Z-R relationship with data from EMS and analyzes from Z-R relations proposed by other authors in an attempt to propose an appropriate Z-R relationship for the Manaus region. In the first stage the relationship characterized the ratio Z = 579R ^ 1,22 which within the limitations found in the present work obtained the best representation for the Manaus MR region. In the evaluation with the relationships already existing in the literature and the characterized, for four events in the city of Manaus it was observed that the characterized relationship obtained good performance in relation to the others analyzed, suggesting that more studies are done to evaluate the performance of this relationship. so that it can be implemented in the Amazon RMs in the future.