Fig. 5: Spatial distributions of WHO-HAQI and attributed changes across China.
From: Disentangling drivers of air pollutant and health risk changes during the COVID-19 lockdown in China
a–c show the WHO-HAQI distributions as derived from observations in 2020, from a counterfactual prediction in 2020, and the predictions averaged over 2015–2019, respectively. c, d show the differences between observation and prediction in 2020, and the changes attributable to meteorology (Met), respectively. Solid circles in hot color represent cities with increased percentages, and in cold color cities with decreased percentages. The size of the circles represents each city’s population.
