Análise da precipitação nas mesorregiões do Estado de Pernambuco.

Abstract

This study aimed to analyze the rainfall in the mesoregions state of Pernambuco. They were collected corresponding rainfall data between January 2000 and December 2015 the meteorological data collection platforms of the National Institute for Space Research. Thus, we determined the parameters,  and , distribution: Gamma, lognormal and Weibull in semiannual longer periods and lower rainfall in each mesoregions. Data were tested using the Adhesion Test Kolmogorov-Smirnov test, where the mean score was 0.05. It is also estimated probable occurrences of accumulated precipitation percentiles 10, 20, 30, 40, 50, 60, 70, 80 and 90%. It was noticed that in relation to the annual accumulated rainfall practically achieved the highest values were for the years 2000 and 2011 for all mesoregions. Already, to the average monthly rainfall, approximately the month from March to August are the wettest months in all mesoregions. In histograms, you can mention two frequency classes of higher percentages, such as the (1-127 mm) for the Metropolitan Mesoregion of Recife and (0-47 mm) for Mesoregion Hinterland San Francisco. Therefore, there was the existence of variability in the precipitation accumulated between the meso as well as, the three probability distributions, set the monthly cumulative rainfall data for all mesoregions.