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DOI	10.1016/j.wace.2024.100643
	Assessing the escalating human-perceived heatwaves in a warming world: The case of China
	Zhang, Jintao; Ren, Guoyu; You, Qinglong
发表日期	2024
ISSN	2212-0947
起始页码	43
卷号	43
英文摘要	With increased global warming, heatwaves are expected to become more intense, frequent, and persistent. Although the spatiotemporal characteristics of heatwaves have been extensively studied, the vast majority of these studies have solely used near-surface air temperatures, particularly daily maximum temperatures (Tmax), to identify heatwaves. Given that air temperature alone proves inadequate as a metric for human heat stress. Here, using the relative threshold in conjunction with the absolute threshold and basing it on wet bulb globe temperature (WBGT), we develop a novel definition of human-perceived heatwaves. The combined effect of temperature and humidity is considered in this definition. On this basis, we quantify the climatology of and longterm changes in heatwaves in China based on homogenized in situ observations and outputs from climate models participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6). The results show that the distribution of human-perceived heatwaves coincides with densely populated areas in the southeastern part of China, despite their limited spatial extent. The observed trends in human-perceived heatwaves have accelerated since the 1960s. It is now anticipated that moderate or worse human-perceived heatwaves will affect more than half of China's population. Moreover, CMIP6 climate projections suggest that the percentage of China's population exposed to historically unprecedented human-perceived heatwaves would increase rapidly in a warmer future, except for the sustainability scenario. It is noted that the increase in severe human-perceived heatwaves is more rapid than that in severe traditional Tmax-based heatwaves, suggesting that the hazard of heatwaves to humans may have been underestimated by previous Tmax-based studies. Our findings demonstrate the urgent need for additional planning and adaptation actions beyond the framework for short-term disaster reduction frameworks currently in place. Although we concentrated on China in this article, our method for evaluating human-perceived heatwaves is easily extended to handle comparable issues everywhere.
英文关键词	Heatwave; Heat stress; WBGT; CMIP6; Climate change
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001170527400001
来源期刊	WEATHER AND CLIMATE EXTREMES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291096
作者单位	China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); Fudan University; China University of Geosciences; China Meteorological Administration
推荐引用方式 GB/T 7714	Zhang, Jintao,Ren, Guoyu,You, Qinglong. Assessing the escalating human-perceived heatwaves in a warming world: The case of China[J],2024,43.
APA	Zhang, Jintao,Ren, Guoyu,&You, Qinglong.(2024).Assessing the escalating human-perceived heatwaves in a warming world: The case of China.WEATHER AND CLIMATE EXTREMES,43.
MLA	Zhang, Jintao,et al."Assessing the escalating human-perceived heatwaves in a warming world: The case of China".WEATHER AND CLIMATE EXTREMES 43(2024).