Fig 2.

Average and the change per decade of excess deaths (A, B), death ratio (%, C, D), and deaths per 10 million residents (E, F) associated with heatwaves in 1990–2019 at a spatial resolution of 0.5°×0.5°. Only grid cells with at least 1 annual death were included. $\mathrm{\%}\mathrm{C}\mathrm{h}\mathrm{a}\mathrm{n}\mathrm{g}\mathrm{e}\mathrm{p}\mathrm{e}\mathrm{r}\mathrm{d}\mathrm{e}\mathrm{c}\mathrm{a}\mathrm{d}\mathrm{e}=\frac{\mathrm{C}\mathrm{h}\mathrm{a}\mathrm{n}\mathrm{g}\mathrm{e}\mathrm{p}\mathrm{e}\mathrm{r}\mathrm{d}\mathrm{e}\mathrm{c}\mathrm{a}\mathrm{d}\mathrm{e}}{Themeanvaluein1990-2019}\times 100\%$. Change per decade is calculated using a linear regression. The base layer of the world map was imported from the public domain Natural Earth project (source: https://www.naturalearthdata.com/downloads/; terms of use: www.naturalearthdata.com/about/terms-of-use/). Summarised data at the country level are provided in S6, S8, and S10 Tables.