Increasing wintertime ozone levels and secondary aerosol formation in the Guanzhong basin, central China

doi:10.1016/j.scitotenv.2020.140961

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

	Increasing wintertime ozone levels and secondary aerosol formation in the Guanzhong basin, central China
	Feng, Tian 1,2; Zhao, Shuyu 3; Zhang, Xiu 2; Wang, Qiyuan 3; Liu, Lang 3; Li, Guohui 3; Tie, Xuexi 3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-11-25
卷号	745 页码:12
关键词	Ozone Atmospheric oxidizing capacity Secondary aerosols WRF-Chem
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.140961
通讯作者	Feng, Tian(fengtian@nbu.edu.cn)
英文摘要	The observed near-surface ozone (O-3) concentration has been remarkably increasing during recent years in winter in the Guanzhong basin, central China, showing a continuous enhancement of the atmospheric oxidizing capacity (AOC). The impact of such a change in the AOC on secondary aerosol formation, however, has not yet been assessed. In this study, we simulate the formation of O-3 and airborne particles in the atmosphere using the WRF-Chem model, in which the AOC is calculated quantitatively, to understand the responses of secondary aerosols to the AOC increase. Meteorological observations, air pollutants including O-3, NO2, SO2, CO, and PM2.5 concentrations at ambient monitoring sites, and the main compositions of submicron particulates measured using ACSM are used to constrain the model simulation. The model result shows that the population hourly and postmeridian O-x (=O-3 + NO3) concentrations are good indicators for the wintertime AOC in the basin, suggested by the significantly positive correlations between them. Sensitivity experiments present that the AOC changes may exert important influences on line particle (PM2.5) concentration with an average rate of 1.94 (mu g m(-3))/(10(6) cm(-3) s(-1)) for Delta(PM2.5)/Delta(AOC), which is mostly caused by the mass changes in secondary organic aerosol (43%) and nitrate aerosol (40%) and less attributed to the ammonium (11%) and sulfate (6%) components. (C) 2020 Published by Elsevier B.V.
资助项目	National Natural Science Foundation of China[41703127] ; Natural Science Foundation of Zhejiang Province[LZ20D050001] ; K. C. Wong Magna Fund in Ningbo University
WOS关键词	RURAL SITE WANGDU ; MEXICO-CITY ; SUMMERTIME OZONE ; OXIDATION CAPACITY ; NITRATE FORMATION ; SURFACE OZONE ; HAZE DAYS ; MODEL ; IMPACTS ; EMISSIONS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000579365600126
资助机构	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/361006/15415]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Feng, Tian
作者单位	1.Ningbo Univ, Inst East China Sea, Ningbo 315211, Zhejiang, Peoples R China 2.Ningbo Univ, Dept Geog & Spatial Informat Tech, Ningbo 315211, Zhejiang, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Feng, Tian,Zhao, Shuyu,Zhang, Xiu,et al. Increasing wintertime ozone levels and secondary aerosol formation in the Guanzhong basin, central China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,745:12.
APA	Feng, Tian.,Zhao, Shuyu.,Zhang, Xiu.,Wang, Qiyuan.,Liu, Lang.,...&Tie, Xuexi.(2020).Increasing wintertime ozone levels and secondary aerosol formation in the Guanzhong basin, central China.SCIENCE OF THE TOTAL ENVIRONMENT,745,12.
MLA	Feng, Tian,et al."Increasing wintertime ozone levels and secondary aerosol formation in the Guanzhong basin, central China".SCIENCE OF THE TOTAL ENVIRONMENT 745(2020):12.