Urban Heat Island Analysis and Mitigation
摘要
Urban Heat Island (UHI) is the phenomenon where cities are warmer than nearby rural areas. This difference is due to human activities, less vegetation, and changed land surfaces. This study looks at rising urban temperatures, which lead to higher energy use, environmental harm, and poor living conditions. The main goals are to find UHI hotspots, look at changes in Land Surface Temperature (LST), compare LST values over two years to spot warming or cooling trends, measure UHI intensity, evaluate temperature changes in different areas, and map LST and UHI distribution across zones. The study focuses on urban areas with various land uses and population densities to make the findings applicable to many contexts. We used Landsat 8 satellite images to collect LST data, and QGIS tools helped us find hotspots with higher temperatures. We analyzed changes in LST over time by comparing data from different years. A pixel-based comparison of LST from two years showed areas with marked warming or cooling. We calculated UHI intensity by measuring temperature differences between urban and neighboring rural areas. We mapped temperature changes across different land cover types to see the effects of urbanization. Finally, we generated heat maps using QGIS to illustrate LST and UHI intensity distribution. Early results show significant UHI hotspots and a trend of increasing warming in specific urban areas, with clear temperature differences between urban and rural zones. These findings emphasize the need for sustainable urban planning that includes more vegetation, reflective surfaces, and changes in land use. Ongoing monitoring and strategic actions are crucial for building climate-resilient cities.