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Aerosol particles at a high-altitude site on the Southeast Tibetan Plateau, China: Implications for pollution transport from South Asia
Z.Z. Zhao; J.J. Cao; Z.X. Shen; B.Q. Xu; C.S. Zhu; L.-W. Antony Chen; X.L. Su; S.X. Liu; Y.M. Han; G.H. Wang; Kinfai Ho
2013
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES,
卷号118期号:19页码:11,360–11,375
合作性质国际
摘要      Bulk aerosol samples were collected from 16 July 2008 to 26 July 2009 at Lulang, a high-altitude (>3300m above sea level) site on the southeast Tibetan Plateau (TP); objectives were to determine chemical characteristics of the aerosol and identify its major sources. We report aerosol (total suspended particulate, TSP) mass levels and the concentrations of selected elements, carbonaceous species, and water-soluble inorganic ions. Significant buildup of aerosol mass and chemical species (organic carbon, element carbon, nitrate, and sulfate) occurred during the premonsoon, while lower concentrations were observed during the monsoon. Seasonal variations in aerosol and chemical species were driven by precipitation scavenging and atmospheric circulation. Two kinds of high-aerosol episodes were observed: one was enriched with dust indicators (Fe and Ca2+), and the other was enhanced with organic and elemental carbon (OC and EC), SO42−, NO3, and Fe. The TSP loadings during the latter were 3 to 6 times those on normal days. The greatest aerosol optical depths (National Centers for Environmental Protection/National Center for Atmospheric Research reanalysis) occurred upwind, in eastern India and Bangladesh, and trajectory analysis indicates that air pollutants were transported from the southwest. Northwesterly winds brought high levels of natural emissions (Fe, Ca2+) and low levels of pollutants (SO42−, NO3, K+, and EC); this was consistent with high aerosol optical depths over the western deserts and Gobi. Our work provides evidence that both geological and pollution aerosols from surrounding regions impact the aerosol population of the TP.
关键词Bulk Aerosol Aerosol Population
学科领域大气科学 ; 环境科学
收录类别SCI
语种英语
WOS记录号WOS:000330266700029
引用统计
被引频次:44[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/361006/2619
专题粉尘与环境研究室
通讯作者J.J. Cao
推荐引用方式
GB/T 7714
Z.Z. Zhao,J.J. Cao,Z.X. Shen,et al. Aerosol particles at a high-altitude site on the Southeast Tibetan Plateau, China: Implications for pollution transport from South Asia[J]. JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES,,2013,118(19):11,360–11,375.
APA Z.Z. Zhao.,J.J. Cao.,Z.X. Shen.,B.Q. Xu.,C.S. Zhu.,...&Kinfai Ho.(2013).Aerosol particles at a high-altitude site on the Southeast Tibetan Plateau, China: Implications for pollution transport from South Asia.JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES,,118(19),11,360–11,375.
MLA Z.Z. Zhao,et al."Aerosol particles at a high-altitude site on the Southeast Tibetan Plateau, China: Implications for pollution transport from South Asia".JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES, 118.19(2013):11,360–11,375.
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