STUDY OF HOMOGENEITY OF PRECIPITATION IN A REGION IN THE PROVINCE OF BUENOS-AIRES, ARGENTINA

Monthly and annual climatic variabilities of precipitation were analyz ed from a 60 years record of rainfall data at 10 measuring stations in the humid region of Argentina. Different statistical techniques were used to analyze the regional homogeneity of precipitation fields. Spec ial structures and monthly trends were studied. Simple correlations of yearly precipitation at different locations were computed. Exponentia l functions relating cross-correlations and distances were determined through regression analysis. Monthly and annual rainfall show no evide nt signs of trends; aleatory processes are predominant in the whole re gion; and, correlation functions are independent of the direction of t he vector connecting the stations.