气候变化领域集成服务门户(CCPortal): Effect of sub-cloud evaporation on the delta O-18 of precipitation in Qilian Mountains and Hexi Corridor, China

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DOI	10.3724/SP.J.1226.2016.00378
	Effect of sub-cloud evaporation on the delta O-18 of precipitation in Qilian Mountains and Hexi Corridor, China
	Li, ZongXing; Feng, Qi; Wang, YaMin; Li, JianGuo; Guo, XiaoYan; Li, YongGe
发表日期	2016
ISSN	1674-3822
起始页码	378
结束页码	387
卷号	8 期号:5
英文摘要	The sub-cloud evaporation effect refers to the evaporation process for raindrops that fall from the cloud base to the ground, which is usually accompanied by depleted light isotopes and enriched heavy isotopes in the precipitation. Based on 461 event-based precipitation samples collected from 12 weather stations in the Qilian Mountains and the Hexi Corridor from May to August of 2013, our results indicated that sub-cloud evaporation has a great influence on the delta O-18 of precipitation, especially in small-amount precipitation events. In May, June, July, and August the delta O-18 composition was enriched by 35%, 26%, 39%, and 41%, respectively, from the cloud base to the ground. This influence clearly strengthened with temperature rise, from the Qilian Mountains to the Hexi Corridor. When falling raindrops are evaporated by 1.0% in the Qilian Mountains and the Hexi Corridor, the composition of delta O-18 would be enriched by 1.2% and 2.6%, respectively. Temperature dominated the sub-cloud evaporation in the Qilian Mountains, whereas relative humidity controlled it in the Hexi Corridor. These results provide new proofs of the evolutional process of stable isotopes in precipitation in arid regions.
英文关键词	sub-cloud evaporation; precipitation; stable isotope; Qilian Mountains
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS关键词	ATMOSPHERIC WATER-BALANCE ; STABLE-ISOTOPE ; TIBETAN PLATEAU ; MOISTURE TRANSPORT ; DEUTERIUM EXCESS ; ABLATION PERIOD ; RIVER-BASIN ; EVOLUTION ; REGION ; SYSTEM
WOS记录号	WOS:000391633800003
来源期刊	SCIENCES IN COLD AND ARID REGIONS
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/239376
作者单位	[Li, ZongXing; Feng, Qi; Li, JianGuo; Guo, XiaoYan; Li, YongGe] Chinese Acad Sci, Key Lab Ecohydrol Inland River Basins, Gansu Hydrol & Water Resources Engn Res Ctr, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; [Wang, YaMin] Changsha Normal Univ, Changsha 410100, Hunan, Peoples R China
推荐引用方式 GB/T 7714	Li, ZongXing,Feng, Qi,Wang, YaMin,et al. Effect of sub-cloud evaporation on the delta O-18 of precipitation in Qilian Mountains and Hexi Corridor, China[J]. 中国科学院西北生态环境资源研究院,2016,8(5).
APA	Li, ZongXing,Feng, Qi,Wang, YaMin,Li, JianGuo,Guo, XiaoYan,&Li, YongGe.(2016).Effect of sub-cloud evaporation on the delta O-18 of precipitation in Qilian Mountains and Hexi Corridor, China.SCIENCES IN COLD AND ARID REGIONS,8(5).
MLA	Li, ZongXing,et al."Effect of sub-cloud evaporation on the delta O-18 of precipitation in Qilian Mountains and Hexi Corridor, China".SCIENCES IN COLD AND ARID REGIONS 8.5(2016).