Nitrate debuts as a dominant contributor to particulate pollution in Beijing: Roles of enhanced atmospheric oxidizing capacity and decreased sulfur dioxide emission

doi:10.1016/j.atmosenv.2020.117995

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Nitrate debuts as a dominant contributor to particulate pollution in Beijing: Roles of enhanced atmospheric oxidizing capacity and decreased sulfur dioxide emission
	Feng, Tian 2,5; Bei, Naifang 3; Zhao, Shuyu 4; Wu, Jiarui 4; Liu, Suixin 4; Li, Xia 4; Liu, Lang 4; Wang, Ruonan 4; Zhang, Xiu 5; Tie, Xuexi 4
刊名	ATMOSPHERIC ENVIRONMENT
	2021
卷号	244 页码:8
关键词	Nitrate Ozone Atmospheric oxidizing capacity Sulfate WRF-Chem
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2020.117995
通讯作者	Li, Guohui(ligh@ieecas.cn)
英文摘要	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.
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关键词	ORGANIC AEROSOL CONCENTRATIONS ; AIR-POLLUTION ; MEXICO-CITY ; BACKGROUND SITE ; GUANZHONG BASIN ; HAZE EVENTS ; CHINA ; PM2.5 ; NORTH ; SECONDARY
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000591728600002
资助机构	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
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/15553]
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.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 2.Ningbo Univ, Inst East China Sea, Ningbo 315211, Zhejiang, 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 Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Shaanxi, Peoples R China 5.Ningbo Univ, Dept Geog & Spatial Informat Tech, 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.