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Mitigating NOX emissions does not help alleviate wintertime particulate pollution in Beijing-Tianjin-Hebei, China

文献类型：期刊论文

作者Li, Xia1,2; Bei, Naifang3; Hu, Bo4; Wu, Jiarui1; Pan, Yuepeng4; Wen, Tianxue4; Liu, Zirui4; Liu, Lang1; Wang, Ruonan1; Li, Guohui1,5
刊名ENVIRONMENTAL POLLUTION
出版日期2021-06-15
卷号279页码:10
ISSN号0269-7491
关键词NOX emissions mitigation Particulate matter pollution PM2.5 Nitrate WRF-Chem model Beijing-Tianjin-Hebei region
DOI10.1016/j.envpol.2021.116931
通讯作者Li, Guohui(ligh@ieecas.cn)
英文摘要Stringent mitigation measures have reduced wintertime fine particulate matter (PM2.5) concentrations by 42.2% from 2013 to 2018 in the Beijing-Tianjin-Hebei (BTH) region, but severe PM pollution still frequently engulfs the region. The observed nitrate aerosols have not exhibited a significant decreasing trend and constituted a major fraction (about 20%) of the total PM2.5, although the surface-measured NO2 concentration has decreased by over 20%. The contributions of nitrogen oxides (NOX) emissions mitigation to the nitrate and PM2.5 concentrations and how to alleviate nitrate aerosols efficiently under the current situation still remains elusive. The WRF-Chem model simulations of a persistent and heavy PM pollution episode in January 2019 in the BTH reveal that NOX emissions mitigation does not help lower wintertime nitrate and PM2.5 concentrations under current conditions in the BTH. A 50% reduction in NOX emissions only decreases nitrate mass by 10.3% but increases PM2.5 concentrations by 3.2%, because the substantial O-3 increase induced by NOX mitigation offsets the HNO3 loss and enhances sulfate and secondary organic aerosols formation. Our results are further consolidated by the occurrence of severe PM pollution in the BTH during the COVID-19 outbreak, with a significant reduction in NO2 concentration. Mitigation of NH3 emissions constitutes the priority measure to effectively lower the nitrate and PM2.5 concentrations in the BTH under current conditions, with 35.5% and 12.7% decrease, respectively, when NH3 emissions are reduced by 50%. (c) 2021 Elsevier Ltd. All rights reserved.
WOS关键词MEXICO-CITY ; ANTHROPOGENIC EMISSIONS ; ATMOSPHERIC AMMONIA ; HIGH-RESOLUTION ; HONO SOURCES ; AIR-QUALITY ; SEVERE HAZE ; HEAVY HAZE ; MODEL ; PHOTOCHEMISTRY
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030203] ; National Key Research & Development Plan[2017YFC0210000] ; National Research Program for Key Issues in Air Pollution Control[DQGG0105]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000647790400016
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research & Development Plan ; National Research Program for Key Issues in Air Pollution Control
源URL[http://ir.ieecas.cn/handle/361006/16500]  
专题地球环境研究所_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.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China
4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China
5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Li, Xia,Bei, Naifang,Hu, Bo,et al. Mitigating NOX emissions does not help alleviate wintertime particulate pollution in Beijing-Tianjin-Hebei, China[J]. ENVIRONMENTAL POLLUTION,2021,279:10.
APA Li, Xia.,Bei, Naifang.,Hu, Bo.,Wu, Jiarui.,Pan, Yuepeng.,...&Li, Guohui.(2021).Mitigating NOX emissions does not help alleviate wintertime particulate pollution in Beijing-Tianjin-Hebei, China.ENVIRONMENTAL POLLUTION,279,10.
MLA Li, Xia,et al."Mitigating NOX emissions does not help alleviate wintertime particulate pollution in Beijing-Tianjin-Hebei, China".ENVIRONMENTAL POLLUTION 279(2021):10.

入库方式： OAI收割

来源：地球环境研究所

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