GSTDTAP  > 气候变化
DOI10.1029/2019JD032058
Potential Effect of Halogens on Atmospheric Oxidation and Air Quality in China
Li, Qinyi1; Badia, Alba1,2; Wang, Tao3; Sarwar, Golam4; Fu, Xiao3; Zhang, Li5,6,7; Zhang, Qiang8; Fung, Jimmy9; Cuevas, Carlos A.1; Wang, Shanshan10; Zhou, Bin10; Saiz-Lopez, Alfonso1,10
2020-05-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2020
卷号125期号:9
文章类型Article
语种英语
国家Spain; Peoples R China; USA
英文摘要

Air pollution has been a hazard in China over recent decades threatening the health of half a billion people. Much effort has been devoted to mitigating air pollution in China leading to a significant reduction in primary pollutants emissions from 2013 to 2017, while a continuously worsening trend of surface ozone (O-3, a secondary pollutant and greenhouse gas) was observed over the same period. Atmospheric oxidation, dominated by daytime reactions involving hydroxyl radicals (OH), is the critical process to convert freshly-emitted compounds into secondary pollutants, and is underestimated in current models of China's air pollution. Halogens (chlorine, bromine, and iodine) are known to profoundly influence oxidation chemistry in the marine environment; however, their impact on atmospheric oxidation and air pollution in China is unknown. In the present study, we report for the first time that halogens substantially enhance the total atmospheric oxidation capacity in polluted areas of China, typically 10% to 20% (up to 87% in winter) and mainly by significantly increasing OH level. The enhanced oxidation along the coast is driven by oceanic emissions, and that over the inland areas by anthropogenic emission. The extent and seasonality of halogen impact are largely explained by the dynamics of Asian monsoon, location and intensity of halogen emissions, and O-3 formation regime. The omission of halogen emissions and chemistry may lead to significant errors in historical re-assessments and future projections of the evolution of atmospheric oxidation in polluted regions.


英文关键词reactive halogen oxidation air qualityS China WRF-Chem
领域气候变化
收录类别SCI-E
WOS记录号WOS:000536605500014
WOS关键词FINE PARTICULATE CHLORIDE ; HETEROGENEOUS N2O5 UPTAKE ; TROPOSPHERIC OZONE ; NITRYL CHLORIDE ; IODINE CHEMISTRY ; ANTHROPOGENIC EMISSIONS ; REACTIVE NITROGEN ; NITRATE FORMATION ; GLOBAL-MODEL ; IMPACT
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/280221
专题气候变化
作者单位1.CSIC, Dept Atmospher Chem & Climate, Inst Phys Chem Rocasolano, Madrid, Spain;
2.UAB, Inst Environm Sci & Technol ICTA, Barcelona, Spain;
3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China;
4.US EPA, Natl Exposure Res Lab, Res Triangle Pk, NC 27711 USA;
5.Princeton Univ, Atmospher & Ocean Sci, Princeton, NJ 08544 USA;
6.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA;
7.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA;
8.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China;
9.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong, Peoples R China;
10.Fudan Univ, Dept Environm Sci & Engn, Shanghai, Peoples R China
推荐引用方式
GB/T 7714
Li, Qinyi,Badia, Alba,Wang, Tao,et al. Potential Effect of Halogens on Atmospheric Oxidation and Air Quality in China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(9).
APA Li, Qinyi.,Badia, Alba.,Wang, Tao.,Sarwar, Golam.,Fu, Xiao.,...&Saiz-Lopez, Alfonso.(2020).Potential Effect of Halogens on Atmospheric Oxidation and Air Quality in China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(9).
MLA Li, Qinyi,et al."Potential Effect of Halogens on Atmospheric Oxidation and Air Quality in China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.9(2020).
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