The Atmospheric System Research Program (ASR) in the Office of Biological and Environmental Research (BER) of the Office of Science (SC), U.S. Department of Energy (DOE), supports research that uses laboratory studies or field data from the Atmospheric Radiation Measurement (ARM) Climate Research Facility, along with process level models, to study key cloud, aerosol, precipitation, and radiative transfer processes that are relevant to improving the accuracy of regional and global climate model predictions. Key ASR science goals are to determine the properties of, and interactions among, aerosols, clouds, precipitation, and radiation that are most critical to understand in order to improve their representation in climate models; ascertain the roles of atmospheric dynamics, thermodynamic structure, radiation, surface properties, and chemical and microphysical processes in the life cycles of aerosols and clouds; and identify and quantify process es along the aerosol-cloud-precipitation continuum that affect radiative fluxes at the surface and top of the atmosphere and radiative and latent heating rate profiles. ASR also supports research that develops and evaluates models of these afore-mentioned processes. More information on the ASR program is available at http://science.energy.gov/ber/research/cesd/atmospheric-system-research-program/.