The 2017 NASA Earth Science Decadal Survey identified science and applications priorities to be pursued during 2017-2027 time. The Decadal Survey identified a number of key science and applications questions and recommended augmentation of the Program of Record (PoR) with several designated observables. This session focuses on the science associated with the aerosols (A) and clouds, convection, and precipitation (CCP) designated observables. Important science objectives related to the development of a combined ACCP observing system are low and high cloud feedbacks, aerosol direct and indirect effects, convective properties (including vertical motions) and interactions with aerosols, cold clouds and precipitation, aerosol vertical redistribution and wet removal, and aerosol attribution and air quality. Abstracts are sought addressing observations, modeling, and applications related to the above topics as well as related future spaceborne and suborbital observation efforts.