ESTIMATION OF LAND SURFACE TEMPERATURE USING EMISSIVITY CALCULATED FROM NORMALIZED DIFFERENCE VEGETATION INDEX

Le Van Anh, Tran Anh Tuan

Abstract


Using thermal infrared remote sensing for calculation of land surface temperature recently has been applied increasingly in the environmental sciences. This paper presents a method of determination of land surface temperature using Normalized Difference Vegetation Index (NDVI) for calculating emissivity. In this study, an attempt has been made to replace the use of an in-situ emissivity as a standard coefficient for the whole study area in traditional methods. The emissivity per pixel retrieved directly from satellite data has been estimated for retrieval of land surface temperature at the better accuracy level. The results show that the satellite derived land surface temperature values are in acceptable agreement with the values which were calculated from in-situ emissivity. It is also found that a strong correlation between emissivity and normalized difference vegetation index (NDVI) over different landcover classes is taken.

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DOI: https://doi.org/10.15625/0866-7187/36/2/4500 Display counter: Abstract : 116 views. PDF : 894 views.

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Vietnam Journal of Earth Sciences, ISSN: 0866 - 7187

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