Coupled regional climate simulations of the future precipitation climate of the Central Andes
Using future atmospheric and oceanic global climate model output as input for COAWST, the present work will investigate changes to the overall precipitation climate (spatial distribution, precipitation rates, and diurnal cycle) of the Central Andes in response to predicted climatic change. This work entails the completion of year-long, atmosphere-ocean coupled COAWST simulations, spanning October to October, for the years 2031, 2059, and 2087 assuming the most likely regional climate pathway (RCP): RCP 6.0. Results will be based upon these yearly “snapshots” and global climate model output for all years in between. Initial results show little change to precipitation coverage or its diurnal cycle, however precipitation amounts did tend to be drier over the Brazilian Plateau and wetter over the Western Amazon and Central Andes. These results suggest potential adjustments to large-scale climate features, such as the Bolivian High.