Retrieval of Land Surface Temperature from Landsat-8 Thermal Infrared Sensor Data

Abstract

Remote sensing technology can be said to be an eye in the sky which provides detailed information on various parameters of the Earth, including climatic, vegetative, and forest variables. For many years, Landsat 8 has been used to study various natural phenomena on Earth. In the present study, Landsat 8 imagery has been used to retrieve land surface temperature (LST). For retrieving LST, TIRS (Thermal Infra-Red Sensor) Spectral Bands have been used. The LST map of Udhamsingh Nagar in Uttarakhand, India has been further prepared for the period 2018 to 2021 for the month of October. The result suggested that for the study area, LST varies from 24 oC to 39 oC for the month of October in the aforesaid study period. High temperatures have been observed in built-up areas like towns and residential areas, whereas in agricultural fields and forests, the LST is lower as compared to human-induced built-up areas. Further, the southeastern part of Udhamsingh Nagar has higher LST as compared to other regions of the study area. Doi: 10.28991/HEF-2022-03-02-02 Full Text: PDF