
The U.S. Climate Reference Network (USCRN) project of NOAA is similar to that of the Department of Agriculture’s Soil Climate Analysist Network (SCAN) project in that both projects’ central focus is to measure the soil’s temperatures and the moisture contents at 5cm (2in), 10cm (4in), 20cm (8in), 50cm, (20in) and 100cm (40in) depths.














