Climate Change and Megacities: South Asian Mega-cities are in extreme heat stress

Kumar Biswajit Debnath, David P. Jenkins, Sandhya Patidar, Andrew Peacock, Ben Nathan Bridgens, Helen Mitrani

Research output: Contribution to conferencePaperpeer-review

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Abstract

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.
Original languageEnglish
Publication statusPublished - 23 Nov 2022
Event36th PLEA Conference 2022: Sustainable Architecture and Urban Design - Pontificia Universidad Católica de Chile, Santiago, Chile
Duration: 23 Nov 202225 Nov 2022
https://plea2022.org

Conference

Conference36th PLEA Conference 2022: Sustainable Architecture and Urban Design
Country/TerritoryChile
CitySantiago
Period23/11/2225/11/22
Internet address

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