干旱区生态环境知识资源中心(Arid): Identifying the dominant impact factors and their contributions to heatwave events over mainland China

Arid

DOI	10.1016/j.scitotenv.2022.157527
	Identifying the dominant impact factors and their contributions to heatwave events over mainland China
	Liang, Liaofeng; Yu, Linfei; Wang, Zhonggen
通讯作者	Wang, ZG
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	848
英文摘要	The heatwave frequency and intensity have significantly changed as the climate warms and human activities increase, which poses a potential risk to human society. However, the impact factors that determine the change of heatwave events remain unclear. Here, we estimated the heatwave events based on data from 2474 in-suit gauges during 1960-2018 at daily scale in China. Besides, we explored possible drivers and their contributions to the change of heatwave based on correlation analysis, multiple linear regression (MLR), and random forest (RF) in different subregions of China. The results show that the temporal changes of all heatwave metrics exhibit significant differences between the period 1960-1984 and the period 1985-2019. Spatially, the heatwave frequency and duration significant increase in the southern China (S), eastern arid region (EA), northeastern China (NE), Qinghai-Tibet region (QT) and western arid and semi-arid region (WAS). The occurrence of the first heatwave event in a year tends to be earlier in S, NE, EA, WAS, and QT than before. Based on the regression modelling and RF, human activities play an important role in heatwave intensity in all subregions of China. For heatwave frequency, urbanization generate a dominant influence in NE, EA, and QT, with relative contributions (RC) ranging from 32.8 % to 38.9 %. long-term climate change exerts the dominant influence in C, N, and S. Moreover, the first day of the yearly heatwave event (HWT) in NE is significantly influenced by climate change, with RC of 33.9 % for temperature variation (TEM). Our findings could provide critical information for understanding the causes of heatwave across different regions of China in the context of rapid urbanization and climate change.
英文关键词	Heatwaves Spatial-temporal variation Impact factors Contribution quantification
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000866470300003
WOS关键词	EXTREME HEAT ; CLIMATE-CHANGE ; TEMPERATURE ; SUMMER ; WAVE ; CIRCULATION ; MORTALITY ; TRENDS ; RADIATION ; SELECTION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394401
推荐引用方式 GB/T 7714	Liang, Liaofeng,Yu, Linfei,Wang, Zhonggen. Identifying the dominant impact factors and their contributions to heatwave events over mainland China[J],2022,848.
APA	Liang, Liaofeng,Yu, Linfei,&Wang, Zhonggen.(2022).Identifying the dominant impact factors and their contributions to heatwave events over mainland China.SCIENCE OF THE TOTAL ENVIRONMENT,848.
MLA	Liang, Liaofeng,et al."Identifying the dominant impact factors and their contributions to heatwave events over mainland China".SCIENCE OF THE TOTAL ENVIRONMENT 848(2022).