Fig. 5: Uneven distribution of heatwave exposure risk trend.

a, b The different exposure risk trend between different income group under (a) SSP2-4.5 and (b) SSP5-8.5. c, d The different exposure risk trend between different city size under (c) SSP2-4.5 and (d) SSP5-8.5. The box indicates the lower (25%) and upper (75%) quantile and the horizontal line indicates the median (50%). P values were calculated by Kruskal–Wallis tests.