A PARTICIPAÇÃO DOS SISTEMAS ATMOSFÉRICOS ATUANTES NA BACIA DO RIO PARANÁ NO PERÍODO 1980 A 2003

Abstract

The geographical climatology can contribute with the sciences that search fortheir study objects in the physical environment, especially nowadays and with asituation of global climatic changes. In order to characterize the climate on theWestern slope of Upper Paraná River, the climatic dynamics from 1980 to 2003were studied. By using rhythmic analysis and the air masses dynamics, it wasdetermined the average participation time of the actuating atmospheric systemand the percentage shared by convective and frontal types of rain. The resultsturned it possible to establish a strip limit for the two rain types. It was notedthat, in places with smaller latitudes, in the hottest months, besides theprevailing action of low atmospheric pressure systems, convective rains are also predominant. As latitude increases, the participation of high pressure systemsand frontal rains also increase. It were also noted that the low pressure systemsare increasing their participation share, along with convective rains.

Keywords

• Sistemas Atmosféricos
• Análise Rítmica
• Pluviosidade
• Bacia do Paraná