干旱区生态环境知识资源中心(Arid): Compound risk dynamics of drought by extreme precipitation and temperature events in a semi-arid watershed

Arid

DOI	10.1016/j.atmosres.2022.106474
	Compound risk dynamics of drought by extreme precipitation and temperature events in a semi-arid watershed
	Hu, Jingyi; Yang, Zhifeng; Hou, Congyu; Ouyang, Wei
通讯作者	Ouyang, W
来源期刊	ATMOSPHERIC RESEARCH
ISSN	0169-8095
EISSN	1873-2895
出版年	2023
卷号	281
英文摘要	With the acceleration of global warming, the correlations between climate factors and drought events remain an important topic, presenting special consequences in arid and semi-arid areas with significant warming. We analyzed the spatiotemporal variations for extreme climate events including indices based on the Expert Team on Climate Change Detection and Indices (ETCCDI), heatwave, and Standardized Precipitation Index (SPI) in a semiarid watershed, and then quantified their relationship. Observations indicated a significant increasing trend of extreme warm events, and the spatial distribution of these trends varied with latitude, longitude, and altitude. Precipitation-related extreme indices (heavy precipitation days and extreme precipitation intensity) also displayed increments of 5.1 mm/10 yr and 0.1 days/10 yr. The average drought events calculated by the SPI were 3.8 times, and the events from 1994 to 2018 was more than those from 1969 to 1993, especially in moderate, severe, and extreme drought. We found that extreme warming events were significantly correlated with drought, so we considered heatwaves and drought events occurring simultaneously. The more frequent drought-heatwave compounds showed that strong warming amplified the drought conditions, and drought could also lead to a more rapid increase for the intensity and duration of heatwaves (0.7 degrees C/10 yr and 0.23 days/10 yr) compared with those in heatwaves alone (0.4 degrees C/10 yr and 0.15 days/10 yr). Our findings emphasize the connections between drought conditions and extreme warm events, which is conducive to improving the understanding of the mechanisms of extreme events and facilitating disaster prevention and control.
英文关键词	Extreme climate indices Drought dynamics Compound extremes Semi -arid watershed
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000877603500004
WOS关键词	ATMOSPHERIC CIRCULATION PATTERNS ; CALIFORNIA DROUGHT ; CLIMATE ; CHINA ; MANAGEMENT ; STATE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395504
推荐引用方式 GB/T 7714	Hu, Jingyi,Yang, Zhifeng,Hou, Congyu,et al. Compound risk dynamics of drought by extreme precipitation and temperature events in a semi-arid watershed[J],2023,281.
APA	Hu, Jingyi,Yang, Zhifeng,Hou, Congyu,&Ouyang, Wei.(2023).Compound risk dynamics of drought by extreme precipitation and temperature events in a semi-arid watershed.ATMOSPHERIC RESEARCH,281.
MLA	Hu, Jingyi,et al."Compound risk dynamics of drought by extreme precipitation and temperature events in a semi-arid watershed".ATMOSPHERIC RESEARCH 281(2023).