Atmospheric Radiation Measurement (ARM) User Facility
The Atmospheric Radiation Measurement (ARM) User Facility is a U.S. Department of Energy scientific user facility used by scientists to obtain long-term measurements in diverse locales for studying atmospheric processes and improving earth system models.
ARM data are currently collected from three fixed-site atmospheric observatories as well as from three ARM mobile facilities and ARM aerial facilities. ARM has collected over 30 years of atmospheric data that are freely available at arm.gov.