Soil moisture is an important component of the hydrological
cycle. It contributes significantly to the water and energy flux from the surface of the earth, which in turn drives the atmospheric circulation. In spite of its importance, information on soil moisture is difficult to get. In India, soil moisture-measuring stations are sparse considering its dynamic nature. Remote sensing-based measurement of soil moisture is a better
alternative to get this information over a large area. The Advanced Microwave Scanning Radiometer