A comparative temperature study of south indian metropolitan cities in india using remote sensing and gis technique

Abstract

The present study has been conducted among three south Indian cities to analyze the surface temperature namely Hyderabad, Chennai and Bangalore. This study was conducted at three levels, first to find out the temporal changes of temperature, second to compare the spatial extension of temperature, and finally to compare the temperature between different land uses. The necessary satellite data for the study was downloaded through the internet and it was pre-processed for analysis. The software ERDAS was used for the image analysis and ArcGIS was used for the vector based analysis. The result of the study shows that, the temperature of Bangalore city has increased much more than the other two cities, that the city Chennai has increased moderately and Hyderabad’s temperature has witnessed least change. The surface temperature variation between different land uses shows that, built-up land and barren areas have the highest temperature when compared to other land uses while water bodies and vegetation have the minimum temperature.
Keywords: Land Surface Temperature, Temporal Variation, Transect Profile