干旱区生态环境知识资源中心(Arid): Effect of Moisture Sources on the Isotopic Composition of Precipitation in Northwest China

Arid

DOI	10.3390/w15081584
	Effect of Moisture Sources on the Isotopic Composition of Precipitation in Northwest China
	Kong, Yanlong; Wang, Ke; Pan, Sheng; Ren, Yaqian; Zhang, Weizun
通讯作者	Kong, YL
来源期刊	WATER
EISSN	2073-4441
出版年	2023
卷号	15 期号:8
英文摘要	Stable isotopes (O-18/O-16 and H-2/H-1) are fingerprints of water molecules and thus can be used to gain insight on water circulation. Especially, the factors controlling the isotopic composition of precipitation should be identified because they act as baseline determinants of the isotopic variations of surface water and groundwater. Here, using the HYSPLIT model, we attribute observed isotope variations to different moisture sources and characterize the isotopic composition of meteoric precipitation in Northwest China. Results show that the westerlies play a dominant role across the region throughout the year, while other moisture sources only affect some parts of the region during a specific season, i.e., Arctic airflow only affects the Altay Mountains as far as the Middle Tianshan Mountains; the East Asia Monsoon only affects the region east of 100 degrees E longitude during the summer; and summer rainfall of local origin may contribute to the precipitation budget of basin areas. Given the different moisture sources across Northwest China, a local meteoric water line (NWMWL) of delta H-2 = 6.8 delta O-18 - 1.6 is observed. Our findings not only can provide valuable insights into the mechanism of precipitation isotope fractionation in Northwest China but also can contribute to a better understanding of regional climate and hydrological studies.
英文关键词	moisture sources stable isotopes precipitation HYSPLIT Northwest China
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:000977811200001
WOS关键词	EAST-ASIAN MONSOON ; STABLE-ISOTOPES ; WATER-RESOURCES ; RIVER-BASIN ; SECONDARY EVAPORATION ; CLIMATE-CHANGE ; ARID REGION ; CIRCULATION ; SENSITIVITY ; LANZHOU
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/399020
推荐引用方式 GB/T 7714	Kong, Yanlong,Wang, Ke,Pan, Sheng,et al. Effect of Moisture Sources on the Isotopic Composition of Precipitation in Northwest China[J],2023,15(8).
APA	Kong, Yanlong,Wang, Ke,Pan, Sheng,Ren, Yaqian,&Zhang, Weizun.(2023).Effect of Moisture Sources on the Isotopic Composition of Precipitation in Northwest China.WATER,15(8).
MLA	Kong, Yanlong,et al."Effect of Moisture Sources on the Isotopic Composition of Precipitation in Northwest China".WATER 15.8(2023).