DOE and Triad National Security, LLC, the operating contractor for LANL, propose to deploy equipment and launch weather balloons to support the Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE). This project will characterize the extent, radiative properties, aerosol interactions, and precipitation characteristics of stratocumulus clouds in the Eastern Pacific year-round at two coastal locations owned and managed by the University of California San Diego Scripps Institute of Oceanography: the Scripps Pier and Scripps Mt. Soledad sites in La Jolla, California.