The Atmospheric Radiation Measurement (ARM) Climate Research Facility is the world’s premier ground-based observations facility advancing atmospheric and climate research. ARM is a multi-laboratory, U.S. Department of Energy (DOE) scientific user facility, and a key contributor to national and international climate research efforts. ARM provides the national and international research community with strategically located in situ and remote sensing observatories designed to improve the understanding and representation, in climate and earth system models, of clouds and aerosols as well as their interactions and coupling with the Earth’s surface. View the website.