In order to calculate rainfall erosivity (R-factor), precipitation data
were simulated with a temporal resolution of 3 h and the average
monthly rainfall were used, in a grid with a spatial resolution of 20 km
covering the entire MRB, a total of 420 points (Fig. 1c). These datasets
comprise the downscaling to 20-km resolution from the global
HadCM3 A1B emission scenario. This is a dynamical downscaling done
by the regional climate Eta-CPTEC model over South America (Chou et
al., 2014) for the period of 1961–1990, considered as “present climate”,
and for the periods of 2011–2040, 2041–2070 and 2071–2099, known