干旱区生态环境知识资源中心(Arid): Construction of high-resolution precipitation dataset and its implication to drought over the Tianshan Mountains, China

Arid

DOI	10.3389/feart.2023.1128990
	Construction of high-resolution precipitation dataset and its implication to drought over the Tianshan Mountains, China
	Li, Xiaoqian; He, Xinlin; Li, Xiaolong; Du, Yongjun; Yang, Guang; Tian, Hao; Yu, Jiawen
通讯作者	He, XL ; Li, XL
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2023
卷号	11
英文摘要	Understanding the drought characteristics of mountainous areas in northwest China with sparse rainfall stations requires high precision, as well as high-resolution precipitation data. Considering the spatial relationship of precipitation and environmental factors, this study downscales Global Precipitation Measurement (GPM) and Multi-Source Weighted-Ensemble Precipitation (MSWEP) based on the geographically weighted regression (GWR) and multi-scale geographically weighted regression (MGWR) models integrated with interpolation. A high-resolution (1 kmx1 km) precipitation dataset during 1979-2020 is reconstructed in the Tianshan Mountains, and the drought characteristics are analyzed by using the optimal dataset. The results show that: 1) Compared with GWR, MGWR model has higher downscaling accuracy; 2) The optimal MSWEP downscaling dataset (CC = 0.93, \|BIAS\| = 0.48%) compared to GPM (CC = 0.81, \|BIAS\| = 1.87%) is closer to the observed precipitation; 3) In the past 40 years, 71% and 9% of the Tianshan Mountains show significant wetting and drying trends respectively, and 16 drought events are identified. 4) The West subregion of the Tianshan Mountains is characterized by low frequency, long duration and high severity of drought events. The characteristics of the East are opposite to those of the West. Occasional extreme drought events occur in the North and South. This paper provides data support and method reference for the study of water-vapor balance and regional ecohydrological process in the arid area of Northwest China.
英文关键词	remotely sensed data multi-scale geographically weighted regression precipitation data fusion drought monitoring Tianshan mountains
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000950529000001
WOS关键词	GEOGRAPHICALLY WEIGHTED REGRESSION ; NORTHWEST CHINA ; CLIMATE-CHANGE ; SATELLITE ; PRODUCTS ; IMERG ; VARIABILITY ; REANALYSIS ; ELEVATION ; PATTERNS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396482
推荐引用方式 GB/T 7714	Li, Xiaoqian,He, Xinlin,Li, Xiaolong,et al. Construction of high-resolution precipitation dataset and its implication to drought over the Tianshan Mountains, China[J],2023,11.
APA	Li, Xiaoqian.,He, Xinlin.,Li, Xiaolong.,Du, Yongjun.,Yang, Guang.,...&Yu, Jiawen.(2023).Construction of high-resolution precipitation dataset and its implication to drought over the Tianshan Mountains, China.FRONTIERS IN EARTH SCIENCE,11.
MLA	Li, Xiaoqian,et al."Construction of high-resolution precipitation dataset and its implication to drought over the Tianshan Mountains, China".FRONTIERS IN EARTH SCIENCE 11(2023).