Fig. 6: Proportional patterns of exposure risk between different income group and city size.

The gross exposure risk (vertical axis) for urban elderly population under (a) SSP2-4.5 and (b) SSP5-8.5. c, d The grow rate of heatwave exposure risk (vertical axis) for urban elderly population under (c) SSP2-4.5 and (d) SSP5-8.5 during 2020s to 2090s.