Cave reveals influence of Antarctica and El Niño on extreme rainfall in the South of Brazil

A cave in the interior of Paraná state in Brazil contains a "climate archive" that enabled Brazilian researchers to reconstruct the history of extreme rainfall in Brazil's South Region over the past 7,500 years. Their findings revealed that the frequency of these events in the 20th century was among the highest in the historical record. They also identified two factors that influence this process: climate variability in Antarctica and El Niño events, both of which are present today.