The soil water content, soil temperature and the freeze/thaw state of soil are critical for understanding droughts, floods and movement of water through the landscape. In addition, production of CO2 from the earth’s surface is dependent on these key parameters. To understand these critical processes, we collaborate with colleagues from US Climate Reference Network, City University of New York NOAA Cooperative Remote Sensing Science and Technology, and the USDA ARS Hydrology and Remote Sensing Laboratory to monitor soil moisture and temperature at the landscape scale using sensors located at 8 sites within a 40 km grid square, including the Cary Institute. These data are a contribution to the calibration/validation program of the NASA-Soil Moisture Active Passive (SMAP) mission. For questions or further information, please contact Vicky Kelly at KellyV@caryinstitute.org.