In a changing climate Hadley cell induces a record flood in amazon and another recorded drought across South Brazil in 2021

Over the last decade, the Amazon region has been hit by some of the worst floods in history. The floods killed hundreds of people and damaged thousands of homes. However, in southeast Brazil, specifically in the states of Sao Paulo, Rio de Janeiro, and Minas Gerais, a highly significant decreasing rainfall trend has been discovered. The Sao Paulo State drought has had a significant impact on national electrical energy and agricultural productivity. In the last 100 years and 90 years, respectively, 2021 was a record flood in the Amazon region and a record drought in southeast Brazil. According to this study, recent floods in the Amazon and droughts in southeast Brazil, particularly extreme events in 2021, are strongly linked to the changing Hadley cell.