气候变化领域集成服务门户(CCPortal): Stable isotope variations in precipitation in the northwesternmost Tibetan Plateau related to various meteorological controlling factors

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DOI	10.1016/j.atmosres.2019.04.026
	Stable isotope variations in precipitation in the northwesternmost Tibetan Plateau related to various meteorological controlling factors
	Sun C.; Chen Y.; Li J.; Chen W.; Li X.
发表日期	2019
ISSN	0169-8095
起始页码	66
结束页码	78
卷号	227
英文摘要	Precipitation plays an important role in global water cycle, and the stable hydrogen and oxygen isotopes of precipitation provide useful information in hydrological processes. To evaluate the controlling factors on stable isotopes of precipitation in the northwesternmost Tibetan Plateau (NWTP), the spatial-temporal variation of δ18O and δ2H in precipitation was investigated based on 120 event-based precipitation samples collected from 3 stations (Jiangka, Shaman and Xihexiu) during 2011–2014 and 45 monthly average precipitation data of Hetian station (GNIP) and 23 individual precipitation events of Shiquanhe station during 2001. The values of δ18O and δ2H in precipitation are more positive in the summer (June to July) and negative in the winter (November to March). The seasonal d-excess pattern observed in the NWTP is remarkably different from that in adjacent regions. The local meteoric water line (LMWL) was calculated as δ2H = 8.22 δ18O + 12.41 (R2 = 0.98, n = 194) based on the event-based samples. Temperature and altitude effects show significant influence on the precipitation δ18O in the study area. Sub-cloud evaporation and recycling moisture also are important controlling factors during the precipitation process. The sub-cloud evaporation decreased d-excess between 1.7% and 45.8%, and the d-excess decreased linearly with increasing sub-cloud evaporation at about 1.15‰ per 1% change of sub-cloud evaporation. The recycled moisture has an important influence on the precipitation on the Xihexiu, Shaman and Jiangka stations. The result of this study is helpful to the understanding of regional water cycling and optimal water resource management during water shortages. © 2019
英文关键词	Controlling factors; Northwesternmost Tibetan Plateau; Precipitation; Stable isotope
语种	英语
scopus关键词	Evaporation; Isotopes; Moisture; Precipitation (chemical); Water management; Water recycling; Water supply; Controlling factors; Precipitation events; Precipitation process; Precipitation samples; Stable hydrogen and oxygen isotopes; Stable isotopes; Tibetan Plateau; Waterresource management; Precipitation (meteorology); evaporation; hydrogen isotope; isotopic composition; oxygen isotope; precipitation (climatology); precipitation quality; stable isotope; China; Qinghai-Xizang Plateau
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162240
作者单位	Shanxi Normal University, School of Geographical Science, 1 Gongyuan Street, Linfen, Shanxi Province 041000, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi, Xinjiang, China; College of Water Sciences, Beijing Normal University, Beijing, 100875, China; University of Kansas, Department of Geography and Atmospheric Science, 1475 Jayhawk Blvd., Room 409, Lawrence, KS 66045, United States
推荐引用方式 GB/T 7714	Sun C.,Chen Y.,Li J.,et al. Stable isotope variations in precipitation in the northwesternmost Tibetan Plateau related to various meteorological controlling factors[J],2019,227.
APA	Sun C.,Chen Y.,Li J.,Chen W.,&Li X..(2019).Stable isotope variations in precipitation in the northwesternmost Tibetan Plateau related to various meteorological controlling factors.Atmospheric Research,227.
MLA	Sun C.,et al."Stable isotope variations in precipitation in the northwesternmost Tibetan Plateau related to various meteorological controlling factors".Atmospheric Research 227(2019).