Research on Soil Thermal Inertia Retrieval in Heihe River Basin based on MODIS Data
基于MODIS数据的黑河流域土壤热惯量反演研究

Thermal inertia method has been widely used in soil moisture inversion.By using MODIS data,the real thermal inertia model was used to retrieve soil thermal inertia in Heihe River Basin,provided reliable method and aclurate data for soil moisture research in basin.This paper also used field data to validate the model parameters and results;analysed the seasonal change of temperature differences,Albedo and Thermal Inertia,and compared the correlation between the result of Real Thermal Inertia mode (RTI) and Apparent Thermal Inertia model (ATI) with Soil Moisture(SM).The results showed that the temperature differences,Albedo and thermal inertia nave obrious seasonal variation characteristics;This study confirmed that the RTI model is prior to ATI model in simulating soil moisture.