Of 33 Global Megacities, ten are situated in South Asia. Extreme heat waves are becoming an annualphenomenon due to climate change in South Asian megacities. In this study, we evaluated 29 years (1990-2019)of historical data on heat stress in ten selected megacities (existing and prospected) —New Delhi, Dhaka, Mumbai,Kolkata, Ahmedabad, Chennai, Bengaluru, Hyderabad, Chittagong, and Pune—predominantly in India andBangladesh. We used Heat Index (HI) and Environmental Stress Index (ESI) analysis to evaluate stress andvulnerability. Our results showed that most megacities are already experiencing 'Extreme caution' and 'Danger'levels of heat stress which may lead to heat cramps, exhaustion, stroke, and even death. Furthermore, thefrequency of 'Danger' levels of heat stress and vulnerable level of ESI has increased significantly since 2011 in theselected megacities, which elevated the heat-related vulnerability among the millions of inhabitants.KEYWORDS: Extreme heat, Megacities, South Asia, Climate change, vulnerability.
|Publication status||Published - 23 Nov 2022|
|Event||36th PLEA Conference 2022: Sustainable Architecture and Urban Design - Pontificia Universidad Católica de Chile, Santiago, Chile|
Duration: 23 Nov 2022 → 25 Nov 2022
|Conference||36th PLEA Conference 2022: Sustainable Architecture and Urban Design|
|Period||23/11/22 → 25/11/22|