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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
Source PublicationATMOSPHERIC ENVIRONMENT
Volume186Issue:8Pages:209-215
SubtypeArticle
AbstractNitrate 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.
KeywordNitrate Episode Aerosol Size Distribution Cloud Processed Aerosols Boundary-layer Mixing
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1016/j.atmosenv.2018.05.040
WOS KeywordSIZE DISTRIBUTIONS ; PARTICULATE NITRATE ; INORGANIC-IONS ; CHINA ; AEROSOLS ; PM2.5 ; SITE ; INVENTORY ; EMISSIONS ; GASES
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000436202500019
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5103
Collection粉尘与环境研究室
Affiliation1.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
Recommended Citation
GB/T 7714
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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