Circulation patterns 12 atmospheric circulation 12 Argentina 8 air temperature 8 Atmospheric circulation 6 Climatology 6 Southern South America 6 Southern south america 6 Annual cycle 4 Atmospheric circulation patterns 4 Austral summers 4 Austral winter 4 Brazil 4 Climate models 4 Climate simulation 4 Computer simulation 4 El Nino-Southern Oscillation 4 Global model 4 Global models 4 High resolution 4 Interannual variability 4 La Plata Basin 4 Lasers 4 Meteorological agency 4 Meteorological research institutes 4 Meteorology 4 Mountainous area 4 Precipitation trends 4 Present climate 4 Principal component analysis 4