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DOI	10.1007/s12040-016-0670-5
	Chemical compositions of snow from Mt. Yulong, southeastern Tibetan Plateau
	Niu, Hewen; He, Yuanqing; Kang, Shichang; Lu, Xixi; Shi, Xiaoyi; Wang, Shijin
发表日期	2016
ISSN	2347-4327
EISSN	0973-774X
卷号	125 期号:2
英文摘要	The snow and ice in Mt. Yulong offer a unique opportunity to investigate changes in climate and large scale atmospheric circulations over Asia. During February and April 2012, surface snow samples were collected from the Baishui Glacier No. 1 at different altitudes along the eastern slope of Mt. Yulong. Two snowpits were also excavated from Mt. Yulong at altitudes of 4780 and 4730 m a.s.l. in February 2012. The concentrations of inorganic ions were higher at an elevation of 4506 m a.s.l. in the glacier with significant contribution of anthropogenic (mainly NH, SO, NO and crustal (mainly Ca (2+)) constituents. Concentration of HCOO (-) in surface snow exhibited large variability, ranging from 0.04 to 6.8 mu eq L (-1), attributed to dominant contribution from biomass burning emissions. Ion balance (Delta C) and Na (+)/Cl (-) calculations indicated an excess of cations (particularly higher Ca (2+) concentrations) and Cl (-) in snow, considering the sea-salt ratio, respectively. Monsoon season (June-September) ion concentrations in snowpit samples were generally two-fold lower than in other seasons. Principal component analysis was used to identify different sources of ions. Three main factors, accounting for more than 80% of the total variance, were related to different sources, including agricultural activities, biomass burning, and crustal aerosols.
关键词	Atmospheric circulations major ions seasonal variations physical stratigraphy
学科领域	Geology; Science & Technology - Other Topics
语种	英语
WOS研究方向	Geosciences, Multidisciplinary ; Multidisciplinary Sciences
来源期刊	JOURNAL OF EARTH SYSTEM SCIENCE
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/111852
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Niu, Hewen,He, Yuanqing,Kang, Shichang,et al. Chemical compositions of snow from Mt. Yulong, southeastern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2016,125(2).
APA	Niu, Hewen,He, Yuanqing,Kang, Shichang,Lu, Xixi,Shi, Xiaoyi,&Wang, Shijin.(2016).Chemical compositions of snow from Mt. Yulong, southeastern Tibetan Plateau.JOURNAL OF EARTH SYSTEM SCIENCE,125(2).
MLA	Niu, Hewen,et al."Chemical compositions of snow from Mt. Yulong, southeastern Tibetan Plateau".JOURNAL OF EARTH SYSTEM SCIENCE 125.2(2016).