On the Ridging of the South Atlantic Anticyclone Over South Africa: The Impact of Rossby Wave Breaking and of Climate Change

Ridging South Atlantic Anticyclones contribute an important amount of precipitation over Africa. Here, we use a global coupled climate model and the ERA5 reanalysis to separate for first time ridging highs (RHs) based on whether they occur together with Rossby wave breaking (RWB) or not. We show that former type RHs are associated more than latter type. The mean sea level pressure anomalies caused by two types characterized distinct patterns, leading differences in flow moisture-laden air onto land. additionally find RWB mediates effect change during twenty-first century. Consequently, occurring without exhibit little change, while those southern less northeastern Africa future.