Studies using the SSPs to understand multidimensional poverty are few but growing, and underscore that the impacts of climate change on poverty are extremely sensitive to different levels of warming . Multi-sector risks approximately double between 1.5℃ and 2°℃ global mean temperature  change, and double again in a +3ºC world. Comparing a +1.5℃ world pursuing sustainable development  to a high-poverty and high-inequality +3℃ world , Byers et al.  project substantial increases in populations exposed to drought, water stress, heat stress and habitat degradation . While in a +1.5℃ world exposed populations increase by 7-17%, the increase within a +3℃ plus world is 27-51% . Populations in Asia and Africa account for more than 80% of the global population
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report