Abstract
This study describes a semi-empirical bare surface emission model for AMSR-E. Through evaluation of a bare surface emission database generated by the Advanced Integral Equation Model (AIEM) for a wide range of surface dielectric and roughness properties under AMSR-E, we developed a new semi-empirical multi-frequency-polarization surface emission model - the Qp model. This model relates the effects of the surface roughness on the emission signals through the roughness variable Qp at different polarization - p (v or h). The Qp can be simply described as a single surface roughness property of the random surface slope - S. The comparison of the simulations by the Qp and AIEM models indicated that the error is extremely small, its magnitude is only as 10 -3 . The evaluation of this model with the field experimental data also showed a very good agreement. We will show its validation with the field ground radiometer measurement and its application in estimation of soil moisture.
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