Nitrate debuts as a dominant contributor to particulate pollution in Beijing: Roles of enhanced atmospheric oxidizing capacity and decreased sulfur dioxide emission | |
Feng, Tian1,5; Bei, Naifang3; Zhao, Shuyu2; Wu, Jiarui2; Liu, Suixin2; Li, Xia2; Liu, Lang2; Wang, Ruonan2; Zhang, Xiu1; Tie, Xuexi2; Li, Guohui2,4 | |
通讯作者 | Li, Guohui(ligh@ieecas.cn) |
2021 | |
发表期刊 | ATMOSPHERIC ENVIRONMENT |
ISSN | 1352-2310 |
卷号 | 244页码:8 |
摘要 | Implementation of strict emission mitigation measures since 2013 has significantly changed air pollutants in the Beijing-Tianjin-Hebei region (BTH), China. Observations show that ozone (O-3) concentrations have increased by 62.40% (27.84%) and SO2 concentrations have decreased by 56.42% (35.07%) during particulate pollution episodes in Beijing (BTH) in the autumn from 2013 to 2015. The measured nitrate concentration in Beijing has increased markedly, which to a large degree offsets the sulfate decrease caused by SO2 emission mitigation. Using the WRF-Chem model, we demonstrate that the enhanced nitrate formation is primarily attributed to increasing atmospheric oxidizing capacity (AOC) and decreasing sulfate competition for base ions. A 9.41-46.24% (7.58-40.97%) decrease in OH radical (O-3) concentrations in October 2015 reduces nitrate and fine particulate matters (PM2.5) concentrations by 2.51-18.18% and 3.15-18.90% in Beijing, respectively. Based on the scenario in October 2015, if the SO2 emission increases by 20.00-100.00%, the PM2.5 concentration increases by 3.02-11.21%, but the nitrate level decreases by 2.48-21.87% simultaneously. Our results suggest that the nitrate aerosol has become a dominant contributor to particulate pollution in Beijing and that decreasing AOC is critical to mitigate nitrate and PM2.5 concentrations. |
关键词 | Nitrate Ozone Atmospheric oxidizing capacity Sulfate WRF-Chem |
DOI | 10.1016/j.atmosenv.2020.117995 |
关键词[WOS] | ORGANIC AEROSOL CONCENTRATIONS ; AIR-POLLUTION ; MEXICO-CITY ; BACKGROUND SITE ; GUANZHONG BASIN ; HAZE EVENTS ; CHINA ; PM2.5 ; NORTH ; SECONDARY |
收录类别 | SCI ; 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 Natural Science Foundation of China[41703127] ; National Natural Science Foundation of China[41430424] ; National Natural Science Foundation of China[41661144020] ; Natural Science Foundation of Zhejiang Province[LZ20D050001] ; K. C. Wong Magna Fund in Ningbo University |
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 Natural Science Foundation of China ; Natural Science Foundation of Zhejiang Province ; K. C. Wong Magna Fund in Ningbo University |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:000591728600002 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/15554 |
专题 | 粉尘与环境研究室 第四纪科学与全球变化卓越创新中心 |
通讯作者 | Li, Guohui |
作者单位 | 1.Ningbo Univ, Dept Geog & Spatial Informat Tech, Ningbo 315211, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Shaanxi, Peoples R China 3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 5.Ningbo Univ, Inst East China Sea, Ningbo 315211, Zhejiang, Peoples R China |
推荐引用方式 GB/T 7714 | Feng, Tian,Bei, Naifang,Zhao, Shuyu,et al. Nitrate debuts as a dominant contributor to particulate pollution in Beijing: Roles of enhanced atmospheric oxidizing capacity and decreased sulfur dioxide emission[J]. ATMOSPHERIC ENVIRONMENT,2021,244:8. |
APA | Feng, Tian.,Bei, Naifang.,Zhao, Shuyu.,Wu, Jiarui.,Liu, Suixin.,...&Li, Guohui.(2021).Nitrate debuts as a dominant contributor to particulate pollution in Beijing: Roles of enhanced atmospheric oxidizing capacity and decreased sulfur dioxide emission.ATMOSPHERIC ENVIRONMENT,244,8. |
MLA | Feng, Tian,et al."Nitrate debuts as a dominant contributor to particulate pollution in Beijing: Roles of enhanced atmospheric oxidizing capacity and decreased sulfur dioxide emission".ATMOSPHERIC ENVIRONMENT 244(2021):8. |
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