REDUCTION OF SURFACE ROUGHNESS EFFECTS ON THE SOIL MOISTURE RETRIEVAL FROM AMSR-E DATA

Soil moisture (SM) is a major concern in the earth science. In previous studies, in the process of retrieval of SM from remote sensing data, surface roughness effects on the retrieval of SM is obvious and a priori knowledge of surface roughness is necessary. In this paper, a simple method to retrieve SM from passive microwave data is proposed. Using the proposed method, surface roughness effects on soil moisture retrieval can be reduced. Result of sensitivity analysis shows it can be a promising method to retrieve SM. Both simulated data and actual data have been used to retrieve SM with the proposed method in this work. The result shows that the SM can be obtained with a RMSE of 1.14% from the simulated data and 1.7% from actual data.