Abstract
Abstract: Landsat 8 is the eighth satellite in the Landsat program, which provides images at 11 spectral channels, including 2 thermal infrared bands at a spatial resolution of 100 m (band 10 (10,30÷11,30 µm) and band 11 (11,50÷12,50 µm)). Until now, most studies have used only band 10 of Landsat 8 image to calculate land surface temperature. In this paper, we compare the results of determining a land surface temperature from Landsat 8 thermal infrared data when using a single band (single-channel method) and using both thermal infrared bands (split-window method). 02 Landsat 8 scenes in the dry season 2015 - 2016 in Loc Ninh district (Binh Phuoc province) and Lam Ha district (Lam Dong province) were used to calculate the land surface temperature according to the SC and SW methods. The results obtained in both experiments showed that the land surface temperature, determined from band 10 of Landsat 8 images was significantly higher than using band 11. Meanwhile, the method using both thermal infrared bands of Landsat 8 data (SW method) to calculate land surface temperature has higher accuracy when compared with the method using band 10 or band 11 only (SC method).
 Keywords: Landsat 8, thermal infrared, land surface temperature, split-window algorithm, single-channel algorithm.
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