城市化
气候变化
中国
环境科学
气候学
自然资源经济学
城市热岛
极热
地理
经济
气象学
海洋学
经济增长
地质学
考古
作者
Sijia Luo,Xihui Gu,Yansong Guan,Yanhui Zheng,Lunche Wang,Xiang Zhang,Qian Cao,Dongdong Kong,Jianfeng Li
摘要
Abstract Dry‐ and wet‐bulb temperature ( T d and T w ) are usually to define heatwaves (HWs) which have been enhanced under anthropogenic climate change (ACC) and urbanization. However, responses of various types of HWs (i.e., dry HWs, only high T d ; humid HWs, only high T w ; hybrid HWs, both high T d and T w ; total HWs, high T d or T w ), to ACC and urbanization remain unknown. In this study, both observations and simulations show significantly increasing occurrence probability of total HWs over China during 1971–2020, whereas this increase is mainly reflected in hybrid HWs, followed by dry HWs and humid HWs. 68.2%–93.0% of the observed increases in the above four types of HWs can be attributed to ACC; on the other hand, urbanization tends to suppress humid HWs but enhance dry HWs, as a result of contributing to the increase of hybrid HWs by 10.9%. Under future ACC, total HWs are projected to be more frequent as expected, which is mainly sourced from the increasing hybrid HWs because dry/humid HWs are projected to be steady/downward. As a consequence, urban population exposure to ACC‐induced total HWs would remarkably increase to 83.55 billion person‐days by the 2090s, 89.5% of which can be attributed to hybrid HWs. Urbanization would amplify this population exposure of ACC‐induced hybrid HWs from 74.79 billion person‐days to 110.9 billion person‐days. Our results underscore the importance of improving understanding of hybrid HWs in urban areas and developing targeted adaptation planning on a warmer planet.
科研通智能强力驱动
Strongly Powered by AbleSci AI