气候变化领域集成服务门户(CCPortal): Spatiotemporal variations of monocarboxylic acids in snow layers along a transect from Zhongshan Station to Dome A, eastern Antarctica

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DOI	10.1016/j.atmosres.2015.02.008
	Spatiotemporal variations of monocarboxylic acids in snow layers along a transect from Zhongshan Station to Dome A, eastern Antarctica
	Li, Chuanjin; Xiao, Cunde; Shi, Guitao; Ding, Minghu; Kang, Shichang; Zhang, Lulu; Hou, Shugui; Sun, Bo; Qin, Dahe; Ren, Jiawen
发表日期	2015
ISSN	0169-8095
EISSN	1873-2895
卷号	158
英文摘要	The spatiotemporal distributions of formate and acetate in snow layers along a transect from Zhongshan Station to Dome A are presented here. The mean concentrations of mono-carboxylic acids in summer surface snow layers were 2.93 +/- 1.72 ng g(-1) and 10.07 +/- 5.87 ng g(-1) for formate and acetate, respectively. In the snow pit samples, the concentrations varied between 0.47 +/- 0.14 ng g(-1) and 3.12 +/- 424 ng g(-1) for formate and between 5.31 +/- 1.55 ng g(-1) and 13329 +/- 4.64 ng g(-1) for acetate. Spatially, the concentrations of both acids featured negative trends with increasing elevation and distance inland for the initial 600 km of the transect, which implies that marine sources from the coastal oceans dominate the acid supply. Different distribution styles of the acids in the interior section (600-1248 km) suggest that different source region and transporting mechanism may be responsible for the acid deposition in the interior regions. Seasonal variations in the amounts of acid in a coastal snow pit (29-A) indicate higher values in the summer and lower amounts in the winter. An enlarged source region and intensified production and transport mechanisms were primarily responsible for the higher values in summer. Longer records from the interior snow pits (29-L and 29-M) indicate elevated values in the 1970s and lower values in the 1980s and early 1990s. The increases in the mono-carboxylic acids since 1999 in snow pit 29-L and since 2005 in snow pit 29-M were temporally coincident with Chinese expedition activities in the area, suggesting that human activities were responsible for the increases in the acid load during recent decades. (c) 2015 Elsevier B.V. All rights reserved.
关键词	Monocarboxylic acids Spatiotemporal variations Human activities Eastern Antarctica
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	ATMOSPHERIC RESEARCH
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/111770
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	Li, Chuanjin,Xiao, Cunde,Shi, Guitao,et al. Spatiotemporal variations of monocarboxylic acids in snow layers along a transect from Zhongshan Station to Dome A, eastern Antarctica[J]. 中国科学院西北生态环境资源研究院,2015,158.
APA	Li, Chuanjin.,Xiao, Cunde.,Shi, Guitao.,Ding, Minghu.,Kang, Shichang.,...&Ren, Jiawen.(2015).Spatiotemporal variations of monocarboxylic acids in snow layers along a transect from Zhongshan Station to Dome A, eastern Antarctica.ATMOSPHERIC RESEARCH,158.
MLA	Li, Chuanjin,et al."Spatiotemporal variations of monocarboxylic acids in snow layers along a transect from Zhongshan Station to Dome A, eastern Antarctica".ATMOSPHERIC RESEARCH 158(2015).