Iowa Soil Moisture Experiment
Soil moisture has a significant impact on human safety and our economy. It affects land-use and agricultural planning and the cost, quantity, and quality of food. Accurate weather forecasts require the rate of transfer of soil moisture to the atmosphere, whether by evaporation or plant transpiration. Trends in soil moisture are also reflected in climate and regional weather, and affect drought and fire danger levels. Detecting excessive soil moisture is needed for flood warning and mitigation.
Summary Provided By: http://www.etl.noaa.gov/programs/2004/smex/