干旱区生态环境知识资源中心(Arid): Temporal and Spatial Variations of Extreme Climate Events in Northwestern China from 1960 to 2020

Arid

DOI	10.3390/su152014882
	Temporal and Spatial Variations of Extreme Climate Events in Northwestern China from 1960 to 2020
	Liang, Xiaoyan; Niu, Zhenmin; Li, Xiaolong
通讯作者	Liang, XY
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2023
卷号	15 期号:20
英文摘要	In the context of global warming, the frequency and intensity of extreme weather and climate events have been increasing. Characterized by scarce water resources and fragile ecosystems, Northwest China has experienced a climate shift since the 1980s. In this study, spatial and temporal patterns of changes in the indices of climate extremes, based on daily maximum and minimum temperature and precipitation at 172 meteorological stations in Northwest China, were analyzed for the period 1960-2020. A total of 26 indices divided into two categories, 16 extreme temperature indices and 10 extreme precipitation indices, were used. Analysis of these indices revealed a general warming trend in the region, which consistent with global warming. The regional occurrence of summer days, tropical nights, growing season length, warm nights, warm days, and warm spell duration index increased by 0.22, 0.14, 0.29, 0.73, 0.46, and 0.11 days/decade, respectively. Over the same period, the occurrence of frost days, icing days, cool nights, cool days, and cold spell duration index decreased by -0.38, -0.21, -0.93, -0.44, and -0.13 days/decade, respectively. The decreasing trends in cold extremes were greater than the increasing trends in warm extremes. Additionally, many regions have experienced increasing trends in several precipitation indices. The annual total wet-day precipitation increased by 5.3 mm/decade. Increasing trends were also evident in simple daily intensity index, heavy precipitation days, very heavy precipitation days, very wet days, and extremely wet days. Consecutive dry days decreased by -1.5 days/decade, while no significant change was observed in consecutive wet days. In contrast to the remarkable spatial consistency of temperature extremes, precipitation extremes exhibited large and expected spatial variability. Most precipitation indices showed increasing trends in the western region of Northwest China and decreasing trends in the eastern part of Northwest China. These results indicate a transition from cold-dry to warm-wet in Northwestern China. Our findings suggest that Northwest China is experiencing more extreme climate events, which could consequently impact hydrological processes, ecological processes, and human health. These observations increase our understanding of the interactions between climate change and regional climate variability, which is conducive to improving disaster prevention.
英文关键词	extreme climate indices variations temporal series Northwest China
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:001093510600001
WOS关键词	ARID REGION ; PRECIPITATION ; TEMPERATURE ; WEATHER ; INDEXES ; TRENDS ; INHOMOGENEITY ; CIRCULATION ; HYDROLOGY ; QUALITY
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398851
推荐引用方式 GB/T 7714	Liang, Xiaoyan,Niu, Zhenmin,Li, Xiaolong. Temporal and Spatial Variations of Extreme Climate Events in Northwestern China from 1960 to 2020[J],2023,15(20).
APA	Liang, Xiaoyan,Niu, Zhenmin,&Li, Xiaolong.(2023).Temporal and Spatial Variations of Extreme Climate Events in Northwestern China from 1960 to 2020.SUSTAINABILITY,15(20).
MLA	Liang, Xiaoyan,et al."Temporal and Spatial Variations of Extreme Climate Events in Northwestern China from 1960 to 2020".SUSTAINABILITY 15.20(2023).