Atmospheric dust aerosol over the Tibetan Plateau

doi:10.1029/2000JD900672

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（1985-2004）

	Atmospheric dust aerosol over the Tibetan Plateau
	Zhang, XY; Arimoto, R; Cao, JJ; An, ZS; Wang, D
	2001-08-27
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
卷号	106 期号:D16 页码:18471-18476
文章类型	Article
摘要	Cascade impactor and bulk samples of atmospheric aerosol particles were collected at three sites on the Tibetan Plateau: Udaoliang (September 1993 to May 1994) and Lhasa and Gongga (May 1998). The average dust concentration at these groundbased sites was 82 mug m(-3); this is lower than the lowest average concentration observed over the nine major Chinese deserts (arithmetic mean value of 270 mug m(-3)), and it also is lower than that over the Loess Plateau (170 mug m(-3)). The elemental mass-particle size distributions for several major dust-derived elements (Al, Ca, Fe, K, Mn, Si, and Ti) were approximately lognormal, but those for Al, Fe, and Ti differed from Ca, K, and Si. Dry deposition velocities calculated from the observed size distributions and a two-layer deposition model averaged 2.7 cm(-1) for Al, Fe, and Ti. For Ca, K, and Si, which appear to be more strongly affected by local Tibetan sources, the average calculated dry deposition velocity was 4.3 cm s(-1). Wet deposition fluxes estimated from scavenging ratios indicate that less than 10% of the total deposition on the Tibetan Plateau is attributable to wet removal during the 9 months for which data are available. The yearly mean dust deposition rate (local plus remote and dry plus wet) is estimated to be of the order of similar to 100 g m(-2) yr(-1), which is lower than that onto the Chinese desert regions (320 g m(-2) yr-1) or the Loess Plateau (250 g m(-2) yr(-1)), suggesting that the sources upwind of China, and the Tibetan Plateau itself, are not major sources for Asian dust.
学科领域	Meteorology & Atmospheric Sciences
DOI	10.1029/2000JD900672
关键词[WOS]	PACIFIC-OCEAN ; TRANSPORT ; DEPOSITION ; PATTERNS ; LOESS
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000170579400057
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：85[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/11903
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Zhang, XY,Arimoto, R,Cao, JJ,et al. Atmospheric dust aerosol over the Tibetan Plateau[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2001,106(D16):18471-18476.
APA	Zhang, XY,Arimoto, R,Cao, JJ,An, ZS,&Wang, D.(2001).Atmospheric dust aerosol over the Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,106(D16),18471-18476.
MLA	Zhang, XY,et al."Atmospheric dust aerosol over the Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 106.D16(2001):18471-18476.