The DOE SC program in Biological and Environmental Research (BER) hereby announces its interest in receiving applications for Atmospheric System Research (ASR) within BERs Earth and Environmental Systems Sciences Division (EESSD). ASR supports research on key cloud, aerosol, precipitation, and radiative transfer processes that affect the Earths radiative balance and hydrological cycle, especially processes that limit the predictive ability of regional and global models. This NOFO solicits research grant applications for observational, data analysis, and/or modeling studies that use BER-supported Atmospheric Radiation Measurement (ARM) user facility observations to improve understanding and model representation of: 1) Atmospheric processes from ARMs Coast-Urban-Rural Atmospheric Gradient Experiment (CoURAGE) and 2) High latitude and Southern Ocean atmospheric processes using ARM observations. All research supported by awards under this NOFO is intended to benefit the public through increasing our understanding of the Earth system.