Assessing the Spatial Mapping of Heat Vulnerability under Urban Heat Island (UHI) Effect in the Dhaka Metropolitan Area

The urban heat island (UHI) phenomenon gets intensified in the process of urbanization, which increases vulnerability dwellers to heatwaves. UHI-induced heatwaves has increased Bangladesh during past decades. Thus, this study aims examine UHI and city Dhaka using a index (HVI). HVI is constructed various demographic, socioeconomic, environmental risk variables at thana level. Principal component analysis (PCA) was applied 26 normalized for each 41 thanas prepare HVI. Result shows that more than 60% under built-up areas, while vegetation cover water bodies are low proportion. Analysis very high- high-risk zones comprise 6 11 thanas, low- low-risk only 5 8 thanas. correlation with such as exposure (0.62) sensitivity (0.80) found be highly positive, adaptive capacity had negative (?0.26) Findings can utilized mitigation maintaining thermal comfort Dhaka.