Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-6435-2020 |
Measurement report: Vertical distribution of atmospheric particulate matter within the urban boundary layer in southern China - size-segregated chemical composition and secondary formation through cloud processing and heterogeneous reactions | |
Zhou, Shengzhen1,2,9; Wu, Luolin1,2; Guo, Junchen1,2; Chen, Weihua3; Wang, Xuemei3; Zhao, Jun1,2; Cheng, Yafang3,8; Huang, Zuzhao4; Zhang, Jinpu5; Sun, Yele6; Fu, Pingqing7; Jia, Shiguo1,2; Tao, Jun10; Chen, Yanning5; Kuang, Junxia5 | |
2020-06-04 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:11页码:6435-6453 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Germany |
英文摘要 | Many studies have recently been done on understanding the sources and formation mechanisms of atmospheric aerosols at ground level. However, vertical profiles and sources of size-resolved particulate matter within the urban boundary layer are still lacking. In this study, vertical distribution characteristics of size-segregated particles were investigated at three observation platforms (ground level, 118 m, and 488 m) on the 610 m high Canton Tower in Guangzhou, China. Size-segregated aerosol samples were simultaneously collected at the three levels in autumn and winter. Major aerosol components, including water-soluble ions, organic carbon, and elemental carbon, were measured. The results showed that daily average fine-particle concentrations generally decreased with height. Concentrations of sulfate and ammonium in fine particles displayed shallow vertical gradients, and nitrate concentrations increased with height in autumn, while the chemical components showed greater variations in winter than in autumn. The size distributions of sulfate and ammonium in both seasons were characterized by a dominant unimodal mode with peaks in the size range of 0.44-1.0 mu m. In autumn, the nitrate size distribution was bimodal, peaking at 0.44-1.0 and 2.5-10 mu m, while in winter it was unimodal, implying that the formation mechanisms for nitrate particles were different in the two seasons. Our results suggest that the majority of the sulfate and nitrate is formed from aqueous-phase reactions, and we attribute coarse-mode nitrate formation at the measurement site to the heterogeneous reactions of gaseous nitric acid on existing sea-derived coarse particles in autumn. Case studies further showed that atmospheric aqueous-phase and heterogeneous reactions could be important mechanisms for sulfate and nitrate formation, which, in combination with adverse weather conditions such as temperature inversion and calm wind, led to haze formation during autumn and winter in the Pearl River Delta (PRD) region. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000538544400001 |
WOS关键词 | PEARL RIVER-DELTA ; SEVERE WINTER HAZE ; ELEMENTAL CARBON ; ANTHROPOGENIC EMISSIONS ; FORMATION MECHANISMS ; EVOLUTION PROCESSES ; IONIC COMPOSITIONS ; RELATIVE-HUMIDITY ; ORGANIC-CARBON ; AIR-POLLUTION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/273272 |
专题 | 地球科学 |
作者单位 | 1.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou 510275, Peoples R China; 2.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou 510275, Peoples R China; 3.Jinan Univ, Inst Environm & Climate Res, Guangzhou 511443, Peoples R China; 4.Guangzhou Environm Technol Ctr, Guangzhou 510180, Peoples R China; 5.Guangzhou Environm Monitoring Ctr, Guangzhou 510030, Peoples R China; 6.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China; 7.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China; 8.Max Planck Inst Chem, Multiphase Chem Dept, POB 3060, D-55128 Mainz, Germany; 9.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China; 10.Minist Ecol & Environm, South China Inst Environm Sci, Guangzhou 510655, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Shengzhen,Wu, Luolin,Guo, Junchen,et al. Measurement report: Vertical distribution of atmospheric particulate matter within the urban boundary layer in southern China - size-segregated chemical composition and secondary formation through cloud processing and heterogeneous reactions[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(11):6435-6453. |
APA | Zhou, Shengzhen.,Wu, Luolin.,Guo, Junchen.,Chen, Weihua.,Wang, Xuemei.,...&Kuang, Junxia.(2020).Measurement report: Vertical distribution of atmospheric particulate matter within the urban boundary layer in southern China - size-segregated chemical composition and secondary formation through cloud processing and heterogeneous reactions.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(11),6435-6453. |
MLA | Zhou, Shengzhen,et al."Measurement report: Vertical distribution of atmospheric particulate matter within the urban boundary layer in southern China - size-segregated chemical composition and secondary formation through cloud processing and heterogeneous reactions".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.11(2020):6435-6453. |
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