Oceanic influence on southernmost South American precipitation

A. BERMAN; G. SILVESTRI; R. COMPAGNUCCI; V. VELASCO

ATMóSFERA

CENTRO CIENCIAS ATMOSFERA UNAM

Lugar: México; Año: 2012 vol. 25 p. 217 - 233

0187-6236

The potential oceanic influence on southernmost South American precipitation since 1930 is analyzed in this paper. The aim is to define oceanic characteristics that can produce wetter or drier conditions over the mentioned region in different time scales. Results suggest important precipitation-oceanic links in decadal and interdecadal oscillations. The eastern and central subtropical Indian, western tropical Pacific and western and central subtropical Pacific could be forcing the precipitation in decadal time scale. Moreover, the eastern tropical and western subtropical Indian and western and central subtropical Pacific could be forcing the variability of precipitation in interdecadal time scale. Although the research was focused in forcing of precipitation, relations among different regions of the Indian and Pacific oceans in decadal and interdecadal time scales have also been detected. Therefore, results here presented can be useful in discovering new aspects of the remote influence of both oceans on regional climate.