Technology and Methodology |
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RETRIEVEING LAND SURFACE TEMPERATURE OF MOUNTAIN
AREAS IN SOUTHERN CHINA BASED ON ASTER DATA |
WANG Feng-Min, TIAN Qing-Jiu, GUO Jian-Hong |
International Institute for Earth System Science, Nanjing University, Nanjing 210093, China |
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Abstract This research was performed in Liping County, Guizhou Province, a typical mountain area covered by
vegetation in southern China. Having classified land surface objects based on the Normalized Difference Vegetation
Index (NDVI) map compiled from ASTER data, the authors assumed different emissivities for different objects and made
scale conversion to 90 meter resolution, thus compiling the emissivity map of the study area. Then the radiance of
the study area was obtained through the thermal infrared bands of ASTER which was atmospherically corrected by
MODTRAN 4. At last, the authors retrieved the land surface temperature based on the Plank radiate deduction
equation and acquired good results.
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Issue Date: 30 July 2009
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