Aerosol chemistry and particle growth events at an urban downwind site in North China Plain
<p>The North China Plain (NCP) has experienced frequent severe haze pollution events in recent years. While extensive measurements have been made in megacities, aerosol sources, processes, and particle growth at urban downwind sites remain less understood. Here, an aerosol chemical speciati...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-10-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/18/14637/2018/acp-18-14637-2018.pdf |
| id |
doaj-353c53587d454e0b8eaab286a168d5ac |
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| record_format |
Article |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Y. Zhang Y. Zhang W. Du W. Du Y. Wang Q. Wang H. Wang H. Zheng F. Zhang H. Shi Y. Bian Y. Han P. Fu P. Fu F. Canonaco A. S. H. Prévôt T. Zhu P. Wang Z. Li Y. Sun Y. Sun Y. Sun Y. Sun |
| spellingShingle |
Y. Zhang Y. Zhang W. Du W. Du Y. Wang Q. Wang H. Wang H. Zheng F. Zhang H. Shi Y. Bian Y. Han P. Fu P. Fu F. Canonaco A. S. H. Prévôt T. Zhu P. Wang Z. Li Y. Sun Y. Sun Y. Sun Y. Sun Aerosol chemistry and particle growth events at an urban downwind site in North China Plain Atmospheric Chemistry and Physics |
| author_facet |
Y. Zhang Y. Zhang W. Du W. Du Y. Wang Q. Wang H. Wang H. Zheng F. Zhang H. Shi Y. Bian Y. Han P. Fu P. Fu F. Canonaco A. S. H. Prévôt T. Zhu P. Wang Z. Li Y. Sun Y. Sun Y. Sun Y. Sun |
| author_sort |
Y. Zhang |
| title |
Aerosol chemistry and particle growth events at an urban downwind site in North China Plain |
| title_short |
Aerosol chemistry and particle growth events at an urban downwind site in North China Plain |
| title_full |
Aerosol chemistry and particle growth events at an urban downwind site in North China Plain |
| title_fullStr |
Aerosol chemistry and particle growth events at an urban downwind site in North China Plain |
| title_full_unstemmed |
Aerosol chemistry and particle growth events at an urban downwind site in North China Plain |
| title_sort |
aerosol chemistry and particle growth events at an urban downwind site in north china plain |
| publisher |
Copernicus Publications |
| series |
Atmospheric Chemistry and Physics |
| issn |
1680-7316 1680-7324 |
| publishDate |
2018-10-01 |
| description |
<p>The North China Plain (NCP) has experienced frequent severe haze pollution
events in recent years. While extensive measurements have been made in
megacities, aerosol sources, processes, and particle growth at urban downwind
sites remain less understood. Here, an aerosol chemical speciation monitor
and a scanning mobility particle sizer, along with a suite of collocated
instruments, were deployed at the downwind site of Xingtai, a highly polluted
city in the NCP, for real-time measurements of submicron aerosol (PM<sub>1</sub>)
species and particle number size distributions during May and June 2016. The
average mass concentration of PM<sub>1</sub> was 30.5 (±19.4) µg m<sup>−3</sup>, which is significantly lower than that during
wintertime. Organic aerosols (OAs) constituted the major fraction of PM<sub>1</sub>
(38 %), followed by sulfate (25 %) and nitrate (14 %). Positive
matrix factorization with the multilinear engine version 2 showed that
oxygenated OA (OOA) was the dominant species in OA throughout the study, on
average accounting for 78 % of OA, while traffic and cooking emissions
both accounted for 11 % of OA. Our results highlight that aerosol
particles at the urban downwind site were highly aged and mainly from
secondary formation. However, the diurnal cycle also illustrated the
substantial influence of urban emissions on downwind sites, which are
characterized by similar pronounced early morning peaks for most aerosol
species. New particle formation and growth events were also frequently
observed (58 % of the time) on both clean and polluted days. Particle
growth rates varied from 1.2 to 4.9 nm h<sup>−1</sup> and our results showed that
sulfate and OOA played important roles in particle growth during clean
periods, while OOA was more important than sulfate during polluted events.
Further analyses showed that particle growth rates have no clear dependence
on air mass trajectories.</p> |
| url |
https://www.atmos-chem-phys.net/18/14637/2018/acp-18-14637-2018.pdf |
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AT yzhang aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT yzhang aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT wdu aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT wdu aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT ywang aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT qwang aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT hwang aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT hzheng aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT fzhang aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT hshi aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT ybian aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT yhan aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT pfu aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT pfu aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT fcanonaco aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT ashprevot aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT tzhu aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT pwang aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT zli aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT ysun aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT ysun aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT ysun aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain AT ysun aerosolchemistryandparticlegrowtheventsatanurbandownwindsiteinnorthchinaplain |
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doaj-353c53587d454e0b8eaab286a168d5ac2020-11-24T21:06:41ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242018-10-0118146371465110.5194/acp-18-14637-2018Aerosol chemistry and particle growth events at an urban downwind site in North China PlainY. Zhang0Y. Zhang1W. Du2W. Du3Y. Wang4Q. Wang5H. Wang6H. Zheng7F. Zhang8H. Shi9Y. Bian10Y. Han11P. Fu12P. Fu13F. Canonaco14A. S. H. Prévôt15T. Zhu16P. Wang17Z. Li18Y. Sun19Y. Sun20Y. Sun21Y. Sun22State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaCollege of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaKey Laboratory of 3D Information Acquisition and Application of Ministry of Education, Capital Normal University, Beijing 100048, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, ChinaKey Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, ChinaCollaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen PSI 5232, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen PSI 5232, SwitzerlandCollege of Environmental Sciences and Engineering, Peking University, Beijing 100871, ChinaKey Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaCollaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaCollege of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaCenter for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China<p>The North China Plain (NCP) has experienced frequent severe haze pollution events in recent years. While extensive measurements have been made in megacities, aerosol sources, processes, and particle growth at urban downwind sites remain less understood. Here, an aerosol chemical speciation monitor and a scanning mobility particle sizer, along with a suite of collocated instruments, were deployed at the downwind site of Xingtai, a highly polluted city in the NCP, for real-time measurements of submicron aerosol (PM<sub>1</sub>) species and particle number size distributions during May and June 2016. The average mass concentration of PM<sub>1</sub> was 30.5 (±19.4) µg m<sup>−3</sup>, which is significantly lower than that during wintertime. Organic aerosols (OAs) constituted the major fraction of PM<sub>1</sub> (38 %), followed by sulfate (25 %) and nitrate (14 %). Positive matrix factorization with the multilinear engine version 2 showed that oxygenated OA (OOA) was the dominant species in OA throughout the study, on average accounting for 78 % of OA, while traffic and cooking emissions both accounted for 11 % of OA. Our results highlight that aerosol particles at the urban downwind site were highly aged and mainly from secondary formation. However, the diurnal cycle also illustrated the substantial influence of urban emissions on downwind sites, which are characterized by similar pronounced early morning peaks for most aerosol species. New particle formation and growth events were also frequently observed (58 % of the time) on both clean and polluted days. Particle growth rates varied from 1.2 to 4.9 nm h<sup>−1</sup> and our results showed that sulfate and OOA played important roles in particle growth during clean periods, while OOA was more important than sulfate during polluted events. Further analyses showed that particle growth rates have no clear dependence on air mass trajectories.</p>https://www.atmos-chem-phys.net/18/14637/2018/acp-18-14637-2018.pdf |