Secondary organic aerosol enhanced by increasing atmospheric oxidizing capacity in Beijing-Tianjin-Hebei (BTH), China | |
Feng, Tian1,2,6; Zhao, Shuyu1,3; Bei, Naifang4; Wu, Jiarui1,3; Liu, Suixin1,3; Li, Xia1,3; Liu, Lang1,3; Qian, Yang7; Yang, Qingchuan3; Wang, Yichen3; Zhou, Weijian1,5,6; Cao, Junji1,3,5; Li, Guohui1,3,5 | |
2019-06-05 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
卷号 | 19期号:11页码:7429-7443 |
摘要 | The implementation of the Air Pollution Prevention and Control Action Plan in China since 2013 has profoundly altered the ambient pollutants in the Beijing-Tianjin-Hebei (BTH) region. Here we show observations of substantially increased O-3 concentrations (about 30 %) and a remarkable increase in the ratio of organic carbon (OC) to elemental carbon (EC) in BTH during the autumn from 2013 to 2015, revealing an enhancement in atmospheric oxidizing capacity (AOC) and secondary organic aerosol (SOA) formation. To explore the impacts of increasing AOC on the SOA formation, a severe air pollution episode from 3 to 8 October 2015 with high O-3 and PM2.5 concentrations is simulated using the WRF-Chem model. The model performs reasonably well in simulating the spatial distributions of PM2.5 and O-3 concentrations over BTH and the temporal variations in PM2.5, O-3, NO2, OC, and EC concentrations in Beijing compared to measurements. Sensitivity studies show that the change in AOC substantially influences the SOA formation in BTH. A sensitivity case characterized by a 31 % 03 decrease (or 36 % OH decrease) reduces the SOA level by about 30 % and the SOA fraction in total organic aerosol by 17 % (from 0.52 to 0.43, dimensionless). Spatially, the SOA decrease caused by reduced AOC is ubiquitous in BTH, but the spatial relationship between SOA concentrations and the AOC is dependent on the SOA precursor distribution. Studies on SOA formation pathways further show that when the AOC is reduced, the SOA from oxidation and partitioning of semivolatile primary organic aerosol (POA) and coemitted intermediate volatile organic compounds (IVOCs) decreases remarkably, followed by those from anthropogenic and biogenic volatile organic compounds (VOCs). Meanwhile, the SOA decrease in the irreversible uptake of glyoxal and methylglyoxal on the aerosol surfaces is negligible. |
DOI | 10.5194/acp-19-7429-2019 |
关键词[WOS] | MEXICO-CITY ; METEOROLOGICAL UNCERTAINTIES ; AIR-QUALITY ; HAZE FORMATION ; HONO SOURCES ; MODEL ; EMISSIONS ; POLLUTION ; SIMULATIONS ; WINTERTIME |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Key R&D Plan (Quantitative Relationship and Regulation Principle between Regional Oxidation Capacity of Atmospheric and Air Quality)[2017YFC0210000] ; National Research Program for Key Issues in Air Pollution Control[DQGG0105] ; National Natural Science Foundation of China[41703127] ; National Natural Science Foundation of China[41430424] ; National Natural Science Foundation of China[41661144020] |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
项目资助者 | National Key R&D Plan (Quantitative Relationship and Regulation Principle between Regional Oxidation Capacity of Atmospheric and Air Quality) ; National Research Program for Key Issues in Air Pollution Control ; National Natural Science Foundation of China |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:000470732300002 |
出版者 | COPERNICUS GESELLSCHAFT MBH |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/13892 |
专题 | 粉尘与环境研究室 |
通讯作者 | Li, Guohui |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 2.Ningbo Univ, Dept Geog & Spatial Informat Tech, Ningbo, Zhejiang, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Shaanxi, Peoples R China 4.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian, Shaanxi, Peoples R China 5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Shaanxi, Peoples R China 6.Xian Accelerator Mass Spectrometry Ctr, Xian, Shaanxi, Peoples R China 7.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Feng, Tian,Zhao, Shuyu,Bei, Naifang,et al. Secondary organic aerosol enhanced by increasing atmospheric oxidizing capacity in Beijing-Tianjin-Hebei (BTH), China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(11):7429-7443. |
APA | Feng, Tian.,Zhao, Shuyu.,Bei, Naifang.,Wu, Jiarui.,Liu, Suixin.,...&Li, Guohui.(2019).Secondary organic aerosol enhanced by increasing atmospheric oxidizing capacity in Beijing-Tianjin-Hebei (BTH), China.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(11),7429-7443. |
MLA | Feng, Tian,et al."Secondary organic aerosol enhanced by increasing atmospheric oxidizing capacity in Beijing-Tianjin-Hebei (BTH), China".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.11(2019):7429-7443. |
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