Abstract
The effective soil temperature is an essential parameter in the process of the soil moisture retrieval by using the passive microwave remote sensing data. The modeled soil temperature profile data was widely adopted to calculate the soil effective temperature at L-band. Considering that the procedure of using land models to obtain soil temperature profile is cumbersome, this study mainly investigates the effectiveness of using thermal infrared soil surface temperature and air temperature as the input parameters to calculate the soil effective temperature at L-band. The results of this study show that the average value of multi-temporal thermal infrared surface temperature and the monthly mean of air temperature can accurately calculate the soil effective temperature with RMSE=0.57K based on the simulated data of 4 years.
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