Distribuição generalizada de valores extremos aplicada às séries de evapotranspiração mensal para a região oeste do Paraná.

Abstract

This paper aims at analyzing the Eto estimates for the western region of Parána through the using GEV. Monthly temperature average data in ºC from 12 regional stations, gotten from IAPAR (Instituto Agronômico do Paraná) and from SIMEPAR (Sistema Meteorológico do Paraná) were used. Through temperature registers, referential evapotranspiration (Eto) values were worked out through the Camargo method. The estimated Eto values with a 75% occurrence level and the adjustments in the GEV model were made with the help of the 7.0 version of the MATLAB R12 software. Wang’s (1998) test was used to validate the adjustments made in the probability model. Among the Eto monthly series which were studied, 84,7% of the series were accepted by Wang’s test.