 This paper compares three different methods for land surface temperature, LST, inversion from Landsat 8 thermal infrared sensor, TARS, including radiative transfer equation-based, split-window algorithm and single-channel method. The radiative transfer equation-based method using band 10 has the highest accuracy with RMSE lower than 1K, while the SW algorithm has moderate accuracy and the SC method has the lowest accuracy. This article was authored by Xiaoliu, Shilin Guo, and Zhao Zongwu.