Fig. 10. (a), (b), (c) Spatial plot of mean summer hot night frequency in the 2010s, 2040s, and 2090s. (d), (e) Spatial plot of the differences in the mean summer hot night frequency between the 2040s and 2010s and those between the 2090s and 2010s. All figures correspond to the SSP2-4.5 scenario.
The average NHD over the PRD in the 2010s, 2040s, and 2090s is 3.6, 5.1, and 7.7 nights, respectively. Although certain rural areas exhibit a lower NHD in the 2040s compared with that in the 2010s, the extent of these decreasing-NHD regions is smaller in the 2090s (Fig. 11 (d), (e)). Better urban planning and architectural design, for instance, increased natural ventilation and green areas, can help mitigate nighttime temperatures in urban areas.