气候变化领域集成服务门户(CCPortal): Wet deposition of precipitation chemistry during 2005-2009 at a remote site (Nam Co Station) in central Tibetan Plateau

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DOI	10.1007/s10874-012-9236-3
	Wet deposition of precipitation chemistry during 2005-2009 at a remote site (Nam Co Station) in central Tibetan Plateau
	Zhang, Yulan; Kang, Shichang; Li, Chaoliu; Cong, Zhiyuan; Zhang, Qianggong
发表日期	2012
ISSN	0167-7764
卷号	69 期号:3
英文摘要	Chemical compositions of precipitation samples collected from a remote and high elevation site (Nam Co Station, 30A degrees 46.44'N, 90A degrees 59.31'E, 4730 m a.s.l.) in central Tibetan Plateau (TP, hereafter) from August 2005 to August 2009 are investigated. During the study period, Ca2+ and HCO (3) (-) have the highest concentrations among ions and are the dominant cation and anion in precipitation, taking 27.46 % and 30.84 % to the total ions respectively. Empirical Orthogonal Functions (EOFs) analyses reveal that crustal aerosol inputs significantly contributed to the loading of Ca2+, Mg2+, SO (4) (2-) and HCO (3) (-) in precipitation, while lake salt plays a major source of K+ and Cl-. Seasonal variations of ionic wet deposition fluxes show high values during monsoon seasons due to large precipitation amount. Among the cations, annual Ca2+ flux is the largest (86.26 eq hm(-2)), Na+ and NH (4) (+) fluxes are following. Among anions, HCO (3) (-) has the highest flux (98.66 eq hm(-2)) while that of NO (3) (-) is the lowest. Annual wet deposition of nitrogen has varied considerably with the average value of 0.70 kg ha(-1) a(-1) at Nam Co Station. About 80 % of total nitrogen flux occurs during the monsoon seasons when precipitation is concentrated, in which NH (4) (+) and NO (3) (-) contributed to 61 % and 39 % of the total nitrogen deposition. Thus, our ionic concentrations and wet deposition fluxes in precipitation can provide a useful dataset to assess atmospheric environment and its impacts on ecosystem in the inland TP.
关键词	Precipitation Major ions Wet deposition Nam Co Tibetan Plateau
学科领域	Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences ; Meteorology & Atmospheric Sciences
来源期刊	JOURNAL OF ATMOSPHERIC CHEMISTRY
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/111648
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yulan,Kang, Shichang,Li, Chaoliu,et al. Wet deposition of precipitation chemistry during 2005-2009 at a remote site (Nam Co Station) in central Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2012,69(3).
APA	Zhang, Yulan,Kang, Shichang,Li, Chaoliu,Cong, Zhiyuan,&Zhang, Qianggong.(2012).Wet deposition of precipitation chemistry during 2005-2009 at a remote site (Nam Co Station) in central Tibetan Plateau.JOURNAL OF ATMOSPHERIC CHEMISTRY,69(3).
MLA	Zhang, Yulan,et al."Wet deposition of precipitation chemistry during 2005-2009 at a remote site (Nam Co Station) in central Tibetan Plateau".JOURNAL OF ATMOSPHERIC CHEMISTRY 69.3(2012).