The E3SM simulation on polar climate has not been well assessed and documented. The hypothesis for this work is to gain a better understanding of the skills of E3SM and create a reference for model developers for the model biases over the Southern Polar region. The goals for this study are to understand the performance of E3SMv2 in identify key biases in atmospheric component over the polar region, including (1) the mean climate (atmospheric component) over the Southern polar cap region (60-90S) in E3SMv2; (2) Southern Polar energy balance and energy fluxes in E3SMv2; (3) Southern Polar Water Balance in E3SMv2; and (4) Southern Hemisphere key large-scale atmospheric mode variabilities in E3SMv2
