ESTIMATION OF LAND SURFACE TEMPERATURE OF HIGH RANGE MOUNTAIN LANDSCAPE OF DEVIKULAM TALUK USING LANDSAT 8 DATA

Abstract

Land Surface Temperature (LST) can be calculated through a thermal infrared remote sensing data. It can record the apparent temperature of the Earth's surface by measuring the radiant energy exiting its surface. With the advent of satellite images and digital image processing software, now it is possible to calculate LST. In this study, LST for Devikulam taluk was derived using Single Window algorithm (SW) with the use of Landsat-8 (Path-144 and Row-53) Thermal Infrared Sensor (TIRS) data of 100m resolution. Emissivity was derived with the help of NDVI proportion of vegetation technique for which Operational Land Imager (OLI) bands 4 and 5 (30 m resolution) were used. The results showed that surface temperature was high in the barren regions whereas it was low in the thick vegetation cover regions. As the SW algorithm uses both OLI and TIRS bands, the LST derived using them were more reliable and accurate.