Present climate 10 climate modeling 10 Argentina 8 Brazil 8 air temperature 8 annual variation 8 Interannual variability 6 Southern South America 6 performance assessment 6 precipitation assessment 6 Annual cycle 4 Atmospheric circulation 4 Atmospheric circulation patterns 4 Austral summers 4 Austral winter 4 Climate models 4 Climate simulation 4 Climatology 4 Computer simulation 4 Global model 4 Global models 4 High resolution 4 Lasers 4 Meteorological agency 4 Meteorological research institutes 4 Mountainous area 4 Precipitation trends 4 South America 4 Southern south america 4 Space applications 4