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DOI	10.3402/tellusb.v64i0.17735
	Iron content and solubility in dust from high-alpine snow along a north-south transect of High Asia
	Wu, Guangjian; Zhang, Chenglong; Li, Zhongqin; Zhang, Xuelei; Gao, Shaopeng
通讯作者	Wu, GJ (通讯作者)
发表日期	2012
ISSN	1600-0889
卷号	64
英文摘要	This study describes the dissolved and insoluble iron fraction of dust (mineral aerosol) in high-alpine snow samples collected along a north-south transect across High Asia (Eastern Tien Shan, Qilian Shan, and Southern Tibetan Plateau). This dust provides the basic chemical properties of mid-and high-level tropospheric Asian dust that can supply the limiting iron nutrient for phytoplankton growth in the North Pacific. The iron content in Asian dust averages 4.95% in Eastern Tien Shan, 3.38-5.41% along Qilian Shan and 3.85% in the Southern Tibetan Plateau. The iron fractional solubility averages about 0.25% in Eastern Tien Shan, 0.05-2% along Qilian Shan and 1.5% in the Southern Tibetan Plateau. Among the controlling factors that can affect iron solubility in Asian dust, such as dust composition and particle grain size, acidity seems to be the most significant and can increase the iron solubility by one or two orders of magnitude with acidification of pH = 0.66. Our results reveal that iron solubility of dust in the remote downwind sites is higher than that in high-alpine snow, confirming the strong pH-dependence of iron solubility, and indicating that Asian dust shows a large variation in iron solubility on a regional scale.
关键词	MINERAL DUST SURFACE SNOW ICE-CORE DISSOLUTION TRANSPORT AEROSOLS SEAWATER MODEL
英文关键词	Asian dust; high-alpine snow; iron content; iron solubility
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000303684000001
来源期刊	TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257981
推荐引用方式 GB/T 7714	Wu, Guangjian,Zhang, Chenglong,Li, Zhongqin,et al. Iron content and solubility in dust from high-alpine snow along a north-south transect of High Asia[J]. 中国科学院青藏高原研究所,2012,64.
APA	Wu, Guangjian,Zhang, Chenglong,Li, Zhongqin,Zhang, Xuelei,&Gao, Shaopeng.(2012).Iron content and solubility in dust from high-alpine snow along a north-south transect of High Asia.TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,64.
MLA	Wu, Guangjian,et al."Iron content and solubility in dust from high-alpine snow along a north-south transect of High Asia".TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY 64(2012).