The number of people expected to live in urban areas highly exposed to climate change impacts has increased substantially . An additional 2.5 billion people are projected to be living in urban areas by 2050, with up to 90% of this increase concentrated in the regions of Asia and Africa. Projections of the number of people expected to live in urban areas highly exposed to climate change impacts have increased. Sea level increase and increases in tropical cyclone storm surge and rainfall intensity will increase the probability of coastal city flooding, with more than a billion people located in low-lying cities and settlements expected to be at risk from coastal-specific climate hazards by 2050 . Sea level rise, increases in tropical cyclone storm surges and more frequent and intense extreme precipitation will increase the number of people, area of urban land, and damages from flood hazard . The main driver for increased heat exposure is the combination of global warming and population growth in already-warm centres, and the majority of the population exposed to heatwaves will live in urban centres. An additional 350 million people living in urban areas are estimated be exposed to water scarcity from severe droughts at 1.5℃ warming, and 410.7 million at 2°C warming. 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report