Ecology, Environment and Conservation Paper

SENSIBLE HEAT FLUX CHARACTERIZATION USING SATELLITE REMOTE SENSING TECHNIQUES

Uma Devi Randhi, J. Swaraj, K. Suresh Kumar and T.B. Patrudu

Abstract

Land surface temperature (LST), vegetation index, and emissivity are significant heat flux calculating components. These also stand as critical indicators for environmental components analysis in the climatological, meteorological, and hydrological applications. In this study, extensive research illustrated heat flux characterization by generating land surface temperature (LST) with LANDSAT - 8 satellite images for Patancheru industrial area subjected to algorithm-based analysis. A simultaneous Land use Land cover (LULC) classification developed for different category areas such as vegetation, bare soil, water body, and built-up land. These classes zonal attributes were calculated from the various developed products such as emissivity, Land surface temperature (LST), and Sensible heat flux. From the results, the emissivity values observed are in the range between 0.98 and 0.99. The LST values are observed in between 30 to 44 oC. A high SHF value was found over the Gullied areas as 17.2815 W/m2, followed by industrial area (3.8508 W/m2) and built-up land (-2.8161 W/m2). Multi-temporal data helped to investigate the relationship between land surface temperature (LST) and normalized difference vegetation index (NDVI) values in temporal resolution. These results represented the high-temperature variations in the study area. The sensible heat flux characterization results proved that sensible heat flux and land surface temperature values are directly proportional.