Seminário do Departamento de Ciências Atmosféricas
Tema: Impacts of ENSO on Seasonal Extremes in Precipitation and Temperature in South America
Palestrante: Kenedy Cipriano Silverio
Resumo: The influence of the El Niño–Southern Oscillation (ENSO) on the climate of South America is well known, but its effects on extreme weather events – such as unusually heavy rainfall or very high and low temperatures – are still not well explored. These extremes often shape the monthly and seasonal averages that affect agriculture, water resources, and ecosystems across the continent. In this talk, we discuss how ENSO influences temperature and precipitation extremes across South America using station-based and gridded precipitation data, together with NCEP–NCAR reanalysis datasets for maximum and minimum temperatures over the period 1979–2009. Unlike many previous studies that focused primarily on mean conditions or rainfall extremes, our analysis considers both temperature and precipitation extremes, examining how their frequency and intensity vary during El Niño and La Niña events. By identifying the regions and seasons most affected, we aim to improve understanding of ENSO-driven extremes across South America, providing insights that may help refine climate models under future scenarios where extremes are projected to intensify.
Transmissão Online: youtube.com/c/DepartamentodeCiênciasAtmosféricasIAGUSP/live