evidence: The U.S. Climate Reference Network (USCRN) is a systematic and sustained network of climate monitoring stations with sites across the contiguous U.S., Alaska, and Hawaii. These stations use high-quality instruments to measure temperature, precipitation, soil conditions, and more. USCRN provides a continuous series of climate observations to monitor national climate trends and support climate-impact research. [...] The vision of the USCRN program is to maintain a sustainable, high-quality climate observation network that can accurately document significant changes to the U.S. climate. USCRN stations were designed for long term climate science research, and are monitored, maintained, and calibrated to high standards to ensure continuity of record and observation accuracy. NCEI manages and maintains USCRN station observations, and NOAA’s Atmospheric Turbulence and Diffusion Division (ATDD) maintains instrumentation and field sites in a long term partnership with NCEI.