干旱区生态环境知识资源中心(Arid): The spatiotemporal variability in precipitation gradients based on meteorological station observations in mountainous areas of Northwest China

Arid

DOI	10.1007/s00704-023-04618-7
	The spatiotemporal variability in precipitation gradients based on meteorological station observations in mountainous areas of Northwest China
	Zhang, Xi; Xu, Min; Kang, Shichang; Wu, Hao; Han, Haidong
通讯作者	Xu, M
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2024
卷号	155 期号:1 页码:163-186
英文摘要	Exploration of the spatiotemporal variability in precipitation gradients (PGs) is important for understanding the spatial differences in precipitation and optimizing hydrological process simulations. Here, the spatiotemporal distribution of precipitation and PG was analyzed in the Tianshan and Qilian Mountains based on national meteorological station data from 1961 to 2017. The relationships between PG and relative humidity and wind speed were explored. The results show that precipitation exhibits a significant increasing trend during the last decades. Precipitation in the Tianshan Mountains is greater in the north and west, the maximum precipitation height (MPH) occurs at 1942.5 m a.s.l., and the precipitation change rate is higher in the west than in the east. Precipitation in the eastern Qilian Mountains is greater, the MPH is approximately 2850 m a.s.l., and the precipitation change rate decreases from the middle to the western and eastern sections. There are noticeable differences in PG between the two mountain areas. Annually, the PG in the Tianshan and Qilian Mountains, except for the Yili Valley, has increased significantly. The PG change rate in the western Qilian Mountains is higher. Monthly, the PG increases most significantly from June to August. Precipitation is positively correlated with elevation in the Tianshan Mountains from April to October and in the western and eastern sections of the Qilian Mountains every month, while that in the middle Qilian Mountains decreases with increasing elevation from November to January. The PG in both mountain regions experienced abrupt changes around the 1970s-1980s, and most areas increased significantly after the abrupt changes, showing a clear humidification phenomenon. Except for some subregions, PG is directly proportional to relative humidity and inversely proportional to wind speed.
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:001084518700001
WOS关键词	CLIMATE-CHANGE ; ARID REGION ; TREND
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/2XILL650/405772
推荐引用方式 GB/T 7714	Zhang, Xi,Xu, Min,Kang, Shichang,et al. The spatiotemporal variability in precipitation gradients based on meteorological station observations in mountainous areas of Northwest China[J],2024,155(1):163-186.
APA	Zhang, Xi,Xu, Min,Kang, Shichang,Wu, Hao,&Han, Haidong.(2024).The spatiotemporal variability in precipitation gradients based on meteorological station observations in mountainous areas of Northwest China.THEORETICAL AND APPLIED CLIMATOLOGY,155(1),163-186.
MLA	Zhang, Xi,et al."The spatiotemporal variability in precipitation gradients based on meteorological station observations in mountainous areas of Northwest China".THEORETICAL AND APPLIED CLIMATOLOGY 155.1(2024):163-186.