干旱区生态环境知识资源中心(Arid): Influence of Sub-Cloud Secondary Evaporation Effects on the Stable Isotopes in Precipitation of Urumqi Glacier No. 1, Eastern Tianshan

Arid

DOI	10.1007/s12583-021-1522-z
	Influence of Sub-Cloud Secondary Evaporation Effects on the Stable Isotopes in Precipitation of Urumqi Glacier No. 1, Eastern Tianshan
	Song, Mengyuan; Li, Zhongqin; Wang, Feiteng; Zhang, Xin
通讯作者	Li, ZQ
来源期刊	JOURNAL OF EARTH SCIENCE
ISSN	1674-487X
EISSN	1867-111X
出版年	2024
卷号	35 期号:1 页码:177-189
英文摘要	In arid regions, the stable hydrogen and oxygen isotopic composition in raindrops is often modified by sub-cloud secondary evaporation when they descend from cloud base to ground through the unsaturated air. As a result of kinetic fractionation, the slope and intercept of the delta H-2-delta O-18 correlation equation decrease. The variation of deuterium excess from cloud base to the ground is often used to quantitatively evaluate the influence of secondary evaporation effect on isotopes in precipitation. Based on the event-based precipitation samples collected at Urumqi Glacier No. 1, eastern Tianshan during four-year observation, the existence and impact of secondary evaporation effects were analyzed by the methods of isotope-evaporation model. Under high air temperature, small raindrop diameter and precipitation amount, and low relative humidity conditions, the remaining rate of raindrops is small and the change of deuterium excess is large relatively, and the slope and intercept of delta H-2-delta O-18 correlation equation are much lower than those of Global Meteoric Water Line, which mean that the influence secondary evaporation on precipitation enhanced. While on the conditions of low air temperature, high relative humidity, heavy rainfall, and large raindrop diameter, the change of deuterium excess is small relatively and the remaining rate of raindrops is large, and the slope and intercept of delta H-2-delta O-18 correlation equation increase, the secondary evaporation is weakened. The isotope-evaporation model described a good linear correlation between changes of deuterium excess and evaporation proportion with the slope of 0.90%/%, which indicated that an increase of 1% in evaporation may result in a decrease of deuterium excess about 0.90%.
英文关键词	stable isotopes meteoric water line deuterium excess sub-cloud secondary evaporation effect precipitation glaciers
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001162401600020
WOS关键词	DEUTERIUM EXCESS ; CENTRAL-ASIA ; RIVER-BASIN ; MOISTURE ORIGIN ; MOUNTAINS ; FRACTIONATION ; SIMULATIONS ; EXTREMES ; LANZHOU ; REGIONS
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/2XILL650/404429
推荐引用方式 GB/T 7714	Song, Mengyuan,Li, Zhongqin,Wang, Feiteng,et al. Influence of Sub-Cloud Secondary Evaporation Effects on the Stable Isotopes in Precipitation of Urumqi Glacier No. 1, Eastern Tianshan[J],2024,35(1):177-189.
APA	Song, Mengyuan,Li, Zhongqin,Wang, Feiteng,&Zhang, Xin.(2024).Influence of Sub-Cloud Secondary Evaporation Effects on the Stable Isotopes in Precipitation of Urumqi Glacier No. 1, Eastern Tianshan.JOURNAL OF EARTH SCIENCE,35(1),177-189.
MLA	Song, Mengyuan,et al."Influence of Sub-Cloud Secondary Evaporation Effects on the Stable Isotopes in Precipitation of Urumqi Glacier No. 1, Eastern Tianshan".JOURNAL OF EARTH SCIENCE 35.1(2024):177-189.