Solar activity and the streamflow of the Parana River

MAUAS, P.J.D.; FLAMENCO, E.

Roma, Italia.

Congreso; Solar Variability and Earth's Climate; 2005

River streamflows are excellent climatic indicators since they integrate precipitations, infiltrations and evapotranspiration over large areas. We studied the streamflow records for the Paraná River, in South America, available from 1904 to date. We found a remarkable positive correlation between the streamflow series and solar activity, as measured by the sunspot numbers, in interdecadal scales.