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Exploring the impact of new particle formation events on PM2.5 pollution during winter in the Yangtze River Delta, China

文献类型：期刊论文

作者Ou, Jinping1; Hu, Qihou2; Liu, Haoran1; Xu, Shiqi3; Wang, Zhuang2; Ji, Xiangguang2,4; Wang, Xinqi1; Xie, Zhouqing1,5,6,7; Kang, Hui6,7
刊名JOURNAL OF ENVIRONMENTAL SCIENCES
出版日期2022
卷号111
ISSN号1001-0742
关键词New particle formation Aerosols PM2.5 Hefei Meteorological conditions
DOI10.1016/j.jes.2021.01.005
通讯作者Hu, Qihou(qhhu@aiofm.ac.cn) ; Liu, Haoran(hrl@ahu.edu.cn)
英文摘要New particle formation (NPF) events are an increasingly interesting topic in air quality and climate science. In this study, the particle number size distributions, and the frequency of NPF events over Hefei were investigated from November 2018 to February 2019. The proportions of the nucleation mode, Aitken mode, and accumulation mode were 24.59%, 53.10%, and 22.30%, respectively, which indicates the presence of abundant ultrafine particles in Hefei. Forty-six NPF events occurred during the observation days, accounting for 41.82% of the entire observation period. Moreover, the favorable meteorological conditions, potential precursor gases, and PM2.5 range of the NPF events were analyzed. Compared to non-NPF days, the NPF events preferentially occurred on days with lower relative humidity, higher wind speeds, and higher temperatures. When the PM2.5 was 15-20, 70-80, and 105-115 mu g/m3, the frequency of the NPF events was higher. Nucleation mode particles were positively related to atmospheric oxidation indicated by ozone when PM2.5 ranged from 15 to 20 mu g/m3, and related to gaseous precursors like SO2 and NO2 when PM2.5 was located at 70-80 and 105-115 mu g/m3. On pollution days, NPF events did not directly contribute to the increase in the PM2.5 in the daytime, however, NPF events would occur during the night and the growth of particulate matter contributes to the nighttime PM2.5 contents. This could lead to pollution that lasted into the next day. These findings are significant to the improvement of our understanding of the effects of aerosols on air quality. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
WOS关键词AEROSOL-SIZE DISTRIBUTION ; BOUNDARY-LAYER ; GROWTH-RATES ; ATMOSPHERIC PARTICLES ; LONG-TERM ; NUMBER ; DISTRIBUTIONS ; NUCLEATION ; SITE ; SHANGHAI
资助项目National Key Research and Development Program of China[2017YFC0210002] ; National Key Research and Development Program of China[2018YFC0213104] ; National Key Research and Development Program of China[2016YFC0203302] ; National Key Research and Development Program of China[2017YFC0212800] ; National Natural Science Foundation of China[41722501] ; National Natural Science Foundation of China[51778596] ; National Natural Science Foundation of China[41977184] ; Anhui Science and Technology Major Project[18030801111] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23020301] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0102] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0205] ; Natural Science Foundation of Anhui Province[1908085QD170] ; Key Research and Devel-opment Project of Anhui Province[202004i07020002] ; Young Talent Project of the Center for Excellence in Regional Atmospheric Environment, CAS[CERAE202004]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000750235100007
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Anhui Science and Technology Major Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Project for Causes and Control of Heavy Air Pollution ; Natural Science Foundation of Anhui Province ; Key Research and Devel-opment Project of Anhui Province ; Young Talent Project of the Center for Excellence in Regional Atmospheric Environment, CAS
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/127981]  
专题中国科学院合肥物质科学研究院
通讯作者Hu, Qihou; Liu, Haoran
作者单位1.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
4.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
6.Univ Sci & Technol China, Inst Polar Environm, Hefei 230026, Peoples R China
7.Univ Sci & Technol China, Dept Environm Sci & Technol, Anhui Prov Key Lab Polar Environm & Global Change, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Ou, Jinping,Hu, Qihou,Liu, Haoran,et al. Exploring the impact of new particle formation events on PM2.5 pollution during winter in the Yangtze River Delta, China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,111.
APA Ou, Jinping.,Hu, Qihou.,Liu, Haoran.,Xu, Shiqi.,Wang, Zhuang.,...&Kang, Hui.(2022).Exploring the impact of new particle formation events on PM2.5 pollution during winter in the Yangtze River Delta, China.JOURNAL OF ENVIRONMENTAL SCIENCES,111.
MLA Ou, Jinping,et al."Exploring the impact of new particle formation events on PM2.5 pollution during winter in the Yangtze River Delta, China".JOURNAL OF ENVIRONMENTAL SCIENCES 111(2022).

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来源：合肥物质科学研究院

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