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KMID : 1024520090180040355
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Journal of the Environmental Sciences
2009 Volume.18 No. 4 p.355 ~ p.367
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Comparison Study on the Estimation Algorithm of Land Surface Temperature for MODIS Data at the Korean Peninsula
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Lee Soon-Hwan
Ahn Ji-Suk
Kim Hae-Dong
Hwang Soo-Jin
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Abstract
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Comparison study on the land surface temperatures, which are calculated from four different algorithms for MODIS data, was carried out and the characteristics of each algorithm on land surface temperature estimation were also analysed in this study. Algorithms, which are well used for various satellite data analysis, in the comparisons are proposed by Price, Becker and Li, Ulivieri et al., and Wan. Verification of estimated land surface temperature from each algorithm is also performed using observation based regression data. The coefficient of determination () for daytime land surface temperature estimated from Wan’s algorithm is higher than that of another algorithms at all seasons and the value of reach on 0.92 at spring. Although for Ulivieri’s algorithm is slightly lower than that for Wan’s algorithm, the variation pattern of land surface temperature for two algorithms are similar. However, the difference of estimated values among four algorithms become small at the region of high land surface temperature.
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KEYWORD
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MODIS, Land surface temperature, Satellite data, Estimation algorithm
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