In context of the relationships between rainfall
erosive variables and positive oscillations of SST, which
indicate a trend toward El-Niño episodes, positive
Pearson’s coefficients can be observed which are more
significant than the coefficients obtained for relationships
with negative oscillations of SST. These results mean that
when SST indicates a positive oscillation, meaning trend
toward El-Niño episodes, in both sub-regions, there is an
increase in rainfall depth, rainfall erosivity, number of rainfall
events and number of rainfall erosive events. As a result,
more erosive rainfall events are expected and consequently
more serious environmental problems will tend to occur
than during the seasons under negative oscillations of
SST in the UGRB. These results are consistent with those
of Haylock et al. (2006) which concluded that rainfall
behavior in southeastern Brazil is more connected to El-
Niño episodes.