气候变化领域集成服务门户(CCPortal): Control of particulate nitrate air pollution in China

CCPortal

DOI	10.1038/s41561-021-00726-z
	Control of particulate nitrate air pollution in China
	Zhai S.; Jacob D.J.; Wang X.; Liu Z.; Wen T.; Shah V.; Li K.; Moch J.M.; Bates K.H.; Song S.; Shen L.; Zhang Y.; Luo G.; Yu F.; Sun Y.; Wang L.; Qi M.; Tao J.; Gui K.; Xu H.; Zhang Q.; Zhao T.; Wang Y.; Lee H.C.; Choi H.; Liao H.
发表日期	2021
ISSN	17520894
起始页码	389
结束页码	395
卷号	14 期号:6
英文摘要	The concentration of fine particulate matter (PM2.5) across China has decreased by 30–50% over the period 2013–2018 due to stringent emission controls. However, the nitrate component of PM2.5 has not responded effectively to decreasing emissions of nitrogen oxides and has actually increased during winter haze pollution events in the North China Plain. Here, we show that the GEOS-Chem atmospheric chemistry model successfully simulates the nitrate concentrations and trends. We find that winter mean nitrate would have increased over 2013–2018 were it not for favourable meteorology. The principal cause of this nitrate increase is weaker deposition. The fraction of total inorganic nitrate as particulate nitrate instead of gaseous nitric acid over the North China Plain in winter increased from 90% in 2013 to 98% in 2017, as emissions of nitrogen oxides and sulfur dioxide decreased while ammonia emissions remained high. This small increase in the particulate fraction greatly slows down deposition of total inorganic nitrate and hence drives the particulate nitrate increase. Our results suggest that decreasing ammonia emissions would decrease particulate nitrate by driving faster deposition of total inorganic nitrate. Decreasing nitrogen oxide emissions is less effective because it drives faster oxidation of nitrogen oxides and slower deposition of total inorganic nitrate. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	ammonia; atmospheric chemistry; atmospheric pollution; haze; nitrate; nitric acid; nitrogen; nitrogen oxides; particulate matter; pollution control; sulfur dioxide; China; North China Plain
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206979
作者单位	John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; School of Energy and Environment, City University of Hong Kong, Hong Kong; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Coastal Environment and Resources of Zhejiang Province (KLaCER), School of Engineering, Westlake University, Hangzhou, Zhejiang, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China; Atmospheric Sciences Research Center, University at Albany, Albany, NY, United States; College of Energy and Environmental Engineering, Hebei University of Engineering, Handan, China; Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing, China; Zhejiang Institute of Meteorological Science...
推荐引用方式 GB/T 7714	Zhai S.,Jacob D.J.,Wang X.,et al. Control of particulate nitrate air pollution in China[J],2021,14(6).
APA	Zhai S..,Jacob D.J..,Wang X..,Liu Z..,Wen T..,...&Liao H..(2021).Control of particulate nitrate air pollution in China.Nature Geoscience,14(6).
MLA	Zhai S.,et al."Control of particulate nitrate air pollution in China".Nature Geoscience 14.6(2021).