干旱区生态环境知识资源中心(Arid): Linkage between precipitation isotopes and water vapor sources in the monsoon margin: Evidence from arid areas of Northwest China

Arid

DOI	10.1007/s40333-024-0095-y
	Linkage between precipitation isotopes and water vapor sources in the monsoon margin: Evidence from arid areas of Northwest China
	Chen, Fenli; Zhang, Qiuyan; Wang, Shengjie; Chen, Jufan; Gao, Minyan; Bhat, Mohd Aadil
通讯作者	Wang, SJ
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2024
卷号	16 期号:3 页码:355-372
英文摘要	The isotope composition in precipitation has been widely considered as a tracer of monsoon activity. Compared with the coastal region, the monsoon margin usually has limited precipitation with large fluctuation and is usually sensitive to climate change. The water resource management in the monsoon margin should be better planned by understanding the composition of precipitation isotope and its influencing factors. In this study, the precipitation samples were collected at five sampling sites (Baiyin City, Kongtong District, Maqu County, Wudu District, and Yinchuan City) of the monsoon margin in the northwest of China in 2022 to analyze the characteristics of stable hydrogen (delta D) and oxygen (delta O-18) isotopes. We analyzed the impact of meteorological factors (temperature, precipitation, and relative humidity) on the composition of precipitation isotope at daily level by regression analysis, utilized the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT)-based backward trajectory model to simulate the air mass trajectory of precipitation events, and adopted the potential source contribution function (PSCF) and concentration weighted trajectory (CWT) to analyze the water vapor sources. The results showed that compared with the global meteoric water line (GMWL), the slope of the local meteoric water line (LMWL; delta D=7.34 delta O-18-1.16) was lower, indicating the existence of strong regional evaporation in the study area. Temperature significantly contributed to delta 18O value, while relative humidity had a significant negative effect on delta 18O value. Through the backward trajectory analysis, we found eight primary locations that were responsible for the water vapor sources of precipitation in the study area, of which moisture from the Indian Ocean to South China Sea (ITSC) and the western continental (CW) had the greatest influence on precipitation in the study area. The hydrogen and oxygen isotopes in precipitation are significantly influenced by the sources and transportation paths of air mass. In addition, the results of PSCF and CWT analysis showed that the water vapor source areas were primarily distributed in the south and northwest direction of the study area.
英文关键词	water vapor monsoon margin stable water isotope transport trajectory air mass d-excess delta O-18 delta D
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001187766500004
WOS关键词	ASIAN SUMMER MONSOON ; MOISTURE SOURCES ; STABLE-ISOTOPES ; VARIABILITY ; TEMPERATURE ; CIRCULATION ; CONVECTION ; DELTA-O-18 ; PATTERNS ; MODELS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404368
推荐引用方式 GB/T 7714	Chen, Fenli,Zhang, Qiuyan,Wang, Shengjie,et al. Linkage between precipitation isotopes and water vapor sources in the monsoon margin: Evidence from arid areas of Northwest China[J],2024,16(3):355-372.
APA	Chen, Fenli,Zhang, Qiuyan,Wang, Shengjie,Chen, Jufan,Gao, Minyan,&Bhat, Mohd Aadil.(2024).Linkage between precipitation isotopes and water vapor sources in the monsoon margin: Evidence from arid areas of Northwest China.JOURNAL OF ARID LAND,16(3),355-372.
MLA	Chen, Fenli,et al."Linkage between precipitation isotopes and water vapor sources in the monsoon margin: Evidence from arid areas of Northwest China".JOURNAL OF ARID LAND 16.3(2024):355-372.