Fig. 4
From: Declining urban density attenuates rising population exposure to surface heat extremes
The distributions of (a) population, (b) area, and (c) SUHI extremes in Shanghai (China) in 2003 and 2020. Different bars represent urban lands with three levels of population densities: high-density (> 30,000 persons/km2), medium-density (3000–30,000 persons/km2), and low-density (< 3000 persons/km2). In (a) and (b) the numbers by the bars show the percentages of population and land, respectively. In the boxplot of (c) black dots and numbers show the mean values of SUHI extremes.
