ESTIMATION OF LAND SURFACE TEMPERATURE VARIATION OVER VARANASI DISTRICT U.P BY USING LANDSAT 8 SATELLITE DATA
Keywords:
RS, GIS, LST, LSE, Brightness Temperature, NDVIAbstract
Land surface temperature (LST) is an essential parameter in various regions like environmental change, urban
land use/cover, heat budget studies and is a key contribution for climate models. LST is the surface temperature of the
earth crust which can be felt when the land surface is touched with hands. This study was carried out in Varanasi district
of U.P. India which geographically lies latitude and longitude 25°10‘N to25°37’N and 82°40‘ E to 83°10’E LANDSAT 8
Operational Land Imager and Thermal Infrared Sensor data with spatial resolution of 30m (OLI) and 100m (TIRS) were
used for monitoring of LST between 2013 and 2018 year of pre monsoon season. Automated mapping algorithm has been
used for calculating the brightness temperature and emissivity which helps to calculating the LST values. At the
conclusion observed that mean LST has been decreased up to 9.91°C between 2013 and 2018 year. But the LST in the
central portion is increased.
