The objective of this investigation was to compare monthly precipitation series by means of the discriminant analysis in order to study the trend and seasonality of the precipitation associated with the Guanare River basin in Venezuela. Data from the Aeropuerto-Guanare meteorological station and series generated by Montecarlo simulation based on the models were used; Pearson III, Gumbel I, Log-normal, Log-Pearson III and a linear model with two harmonics and AR(1) autoregressive errors.

Pag. 1-14, 05-Apr, 833 kB