One-dimensional soil moisture profile, surface temperature, and canopy temperature retrieval by assimilation of ground based microwave radiometer measurements over bare soil and agricultural crops

摘要

The influences of the vegetation in the detection of soil moisture can be significant and may limit the applicability of the satellite passive microwave sensors. Sensitivity analysis of the applied soil moisture algorithm using the ground based radiometer measurements can show where the problem will arise and how they may be circumvented. This paper investigates the method of retrieving one-dimensional soil moisture profile and surface and canopy temperatures, under the influence of vegetation, from passive microwave, visible and near infrared measurements, by using the novel application of data assimilation technique.