Based on a set of pilot atmosphere-only experiments from the Cloud Feedback Model Intercomparison Project Phase 3 (CFMIP-3), in this study, the winter surface air temperature (SAT) and monsoonal circulation changes in East Asia as a response to the 4 × CO 2 forcing in coupled model are decomposed into the four parts in terms of the responses to the uniform SST warming, 4 × CO 2 radiative effect, SST pattern changes, and plant...