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The U.S. Department of Energy’s (DOE's) Biological and Environmental Research (BER) research plays a vital role in supporting climate research in the Earth and Environmental Systems Sciences Division (EESSD). Climate research in EESSD includes atmospheric processes, terrestrial ecosystem processes and hydrological cycling, and environmental and Earth system modeling. BER also supports major long-term projects, including a strong focus on Earth system modeling and uncertainties in model predictions, e.g., including clouds, aerosols, biogeochemistry, and the cryosphere. DOE Office of Science user facilities supported by BER in EESSD include the Atmospheric Radiation Measurement (ARM) facility and the Environmental Molecular Sciences Laboratory (EMSL).