大气透过率和地表比辐射率是求解地表温度的两个关键参数。
Land surface emissivity and atmospheric transmittance are the two key parameters which are used to retrieve LST.
地表比辐射率计算的不确定性，直接影响到卫星资料在数值预报中同化应用的效果。
The uncertainty of surface emissivity influences directly the efficiency of satellite radiance assimilation in numerical weather prediction model.
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