South America regional climate climate modeling 57 precipitation (climatology) 36 climate change 27 ensemble forecasting 24 La Plata Basin 23 Argentina 19 Climate change 19 Regional climate models 19 Brazil 17 Regional climate modeling 17 seasonal variation 17 air temperature 16 Climate models 15 extreme event 15 summer 14 atmospheric circulation 12 downscaling 12 twenty first century 12 Climatology 10 annual variation 10 data set 10 uncertainty analysis 10 La Plata basin 9 Reanalysis 9 Uruguay 9 climatology 9 computer simulation 9 simulation 9