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DOI	10.1007/s12665-021-09504-x
	Influence of below-cloud secondary evaporation on stable isotope composition in precipitation and its relationship with meteorological factors in Shiyang River Basin, Northwest China
	Xiong, Hui; Jia, Wenxiong; Zhu, Guofeng; Ma, Xinggang; Xu, Xiuting; Yuan, Ruifeng; Zhang, Zhiyuan; Shi, Yang; Yang, Le
通讯作者	Jia, WX (通讯作者)，Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China.
发表日期	2021
ISSN	1866-6280
EISSN	1866-6299
卷号	80 期号:7
英文摘要	In arid regions, the process of precipitation from the cloud base to the ground is often affected by the below-cloud secondary evaporation, which changes the ratios of hydrogen and oxygen stable isotopes in falling raindrops. Based on stable isotopes of 670 precipitation samples and meteorological records at 11 stations in the Shiyang River Basin, and combined with the improved Stewart model, this study discussed the impact of different meteorological factors on below-cloud secondary evaporation. The result showed that the Local Meteoric Water Line (LMWL) of the Shiyang River Basin is delta D=7.70 delta O-18+8.90 (r(2)=0.98, p<0.01, n=670). The secondary evaporation is stronger in spring and summer and weaker in autumn and winter, and it is stronger in the mid-downstream than that in the upstream. When temperature ranges from 10 degrees C to 20 degrees C, precipitation is less than 10 mm, and relative humidity is lower than 30%, the phenomenon of isotope dynamic fractionation caused by the secondary evaporation is more obvious. As temperature increases, relative humidity, precipitation amount, or raindrop diameter decreases, the linear relationship between the evaporation remaining ratios of raindrops (f) and the difference of deuterium excess from cloud base to ground (Delta d) weakens gradually. Delta d has a stronger response to the changes in relative humidity than that in temperature and precipitation intensity, and the impact of raindrop diameters more than 1.2 mm on Delta d is very limited.
英文关键词	Shiyang river basin; Below-cloud secondary evaporation; Isotope in precipitation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000631503500002
来源期刊	ENVIRONMENTAL EARTH SCIENCES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254349
作者单位	[Xiong, Hui; Jia, Wenxiong; Zhu, Guofeng; Xu, Xiuting; Yuan, Ruifeng; Zhang, Zhiyuan; Shi, Yang; Yang, Le] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China; [Zhu, Guofeng; Ma, Xinggang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Hui,Jia, Wenxiong,Zhu, Guofeng,et al. Influence of below-cloud secondary evaporation on stable isotope composition in precipitation and its relationship with meteorological factors in Shiyang River Basin, Northwest China[J]. 中国科学院西北生态环境资源研究院,2021,80(7).
APA	Xiong, Hui.,Jia, Wenxiong.,Zhu, Guofeng.,Ma, Xinggang.,Xu, Xiuting.,...&Yang, Le.(2021).Influence of below-cloud secondary evaporation on stable isotope composition in precipitation and its relationship with meteorological factors in Shiyang River Basin, Northwest China.ENVIRONMENTAL EARTH SCIENCES,80(7).
MLA	Xiong, Hui,et al."Influence of below-cloud secondary evaporation on stable isotope composition in precipitation and its relationship with meteorological factors in Shiyang River Basin, Northwest China".ENVIRONMENTAL EARTH SCIENCES 80.7(2021).