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Observational evidence of cloud processes contributing to daytime elevated nitrate in an urban atmosphere
Tao, Jun1; Zhang, Zhisheng1; Tan, Haobo2; Zhang, Leiming3; Wu, Yunfei4; Sun, Jiaren1; Che, Huizheng5; Cao, Junji6; Cheng, Peng7; Chen, Laiguo1; Zhang, Renjian4
2018-08-01
发表期刊ATMOSPHERIC ENVIRONMENT
卷号186期号:8页码:209-215
文章类型Article
摘要Nitrate has become the most important hydrophilic chemical component in PM2.5 during serious air pollution periods in urban areas of the Pearl River Delta (PRD) region of south China, but there is a lack of fully understanding of its formation mechanisms and controlling factors, especially during daytime nitrate episodes. To fill the knowledge gap, water-soluble inorganic ions in PM2.5 and trace gases including SO2, HNO3, NH3, NOx and O-3, particle size distribution, vertical profile of aerosol backscatter density, and ground-level and vertical profiles of key meteorological variables were simultaneously measured at high time resolution in urban Guangzhou of the PRD. The remarkably enhanced nitrate mass concentrations observed at the surface-level during daytime were identified to be caused by strong boundary-layer turbulent mixing of residual aerosols produced from evaporation of low-level shallow stratocumulus clouds. This finding may have important implications on the sources of secondary inorganic aerosols in this and other similar cloudy regions.
关键词Nitrate Episode Aerosol Size Distribution Cloud Processed Aerosols Boundary-layer Mixing
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1016/j.atmosenv.2018.05.040
关键词[WOS]SIZE DISTRIBUTIONS ; PARTICULATE NITRATE ; INORGANIC-IONS ; CHINA ; AEROSOLS ; PM2.5 ; SITE ; INVENTORY ; EMISSIONS ; GASES
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000436202500019
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5103
专题粉尘与环境研究室
作者单位1.Minist Ecol & Environm, South China Inst Environm Sci, Guangzhou, Guangdong, Peoples R China
2.China Meteorol Adm, Inst Trop & Marine Meteorol, Key Lab Reg Numer Weather Predict, Guangzhou, Guangdong, Peoples R China
3.Environm & Climate Change Canada, Sci & Technol Branch, Air Qual Res Div, Toronto, ON, Canada
4.Chinese Acad Sci, Inst Atmospher Phys, RCE TEA, Beijing, Peoples R China
5.Chinese Acad Meteorol Sci, China Meteorol Adm, Inst Atmospher Composit, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Shaanxi, Peoples R China
7.Jinan Univ, Inst Mass Spectrometer & Atmospher Environm, Guangzhou, Guangdong, Peoples R China
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Tao, Jun,Zhang, Zhisheng,Tan, Haobo,et al. Observational evidence of cloud processes contributing to daytime elevated nitrate in an urban atmosphere[J]. ATMOSPHERIC ENVIRONMENT,2018,186(8):209-215.
APA Tao, Jun.,Zhang, Zhisheng.,Tan, Haobo.,Zhang, Leiming.,Wu, Yunfei.,...&Zhang, Renjian.(2018).Observational evidence of cloud processes contributing to daytime elevated nitrate in an urban atmosphere.ATMOSPHERIC ENVIRONMENT,186(8),209-215.
MLA Tao, Jun,et al."Observational evidence of cloud processes contributing to daytime elevated nitrate in an urban atmosphere".ATMOSPHERIC ENVIRONMENT 186.8(2018):209-215.
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