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DOI | 10.1016/j.scib.2020.02.006 |
Wintertime N2O5 uptake coefficients over the North China Plain | |
Wang H.; Chen X.; Lu K.; Tan Z.; Ma X.; Wu Z.; Li X.; Liu Y.; Shang D.; Wu Y.; Zeng L.; Hu M.; Schmitt S.; Kiendler-Scharr A.; Wahner A.; Zhang Y. | |
发表日期 | 2020 |
ISSN | 20959273 |
起始页码 | 765 |
结束页码 | 774 |
卷号 | 65期号:9 |
英文摘要 | The heterogeneous hydrolysis of dinitrogen pentoxide (N2O5) plays an important role in regulating NOx. The N2O5 uptake coefficient, γ(N2O5), was determined using an iterative box model that was constrained to observational data obtained in suburban Beijing from February to March 2016. The box model determined 2289 individual γ(N2O5) values that varied from <0.001 to 0.02 with an average value of 0.0046 ± 0.0039 (and a median value of 0.0032). We found the derived winter γ(N2O5) values in Beijing were relatively low as compared to values reported in previous field studies conducted during winter in Hong Kong (average value of 0.014) and the eastern U.S. coast (median value of 0.0143). In our study, field evidence of the suppression of γ(N2O5) values due to pNO3 − content, organics and the enhancement by aerosol liquid water content (ALWC) is in line with previous laboratory study results. Low ALWC, high pNO3 − content, and particle morphology (inorganic core with an organic shell) accounted for the low γ(N2O5) values in the North China Plain (NCP) during wintertime. The field-derived γ(N2O5) values are well reproduced by a revised parameterization method, which includes the aerosol size distribution, ALWC, nitrate and organic coating, suggesting the feasibility of comprehensive parameterization in the NCP during wintertime. © 2020 Science China Press |
关键词 | N2O5 uptake coefficientNighttime chemistryNitrate pollutionWinter air pollution |
英文关键词 | Iterative methods; Nitrates; Organic coatings; Pollution; Aerosol size distributions; Dinitrogen pentoxide; Laboratory studies; Liquid water content; Nitrate pollution; Parameterization method; Particle morphologies; Uptake coefficients; Aerosols |
语种 | 英语 |
来源期刊 | Science Bulletin
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/207203 |
作者单位 | State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, Jülich, 52428, Germany; Center for Excellence in Regional Atmospheric Environment, Chinese Academy of Sciences, Xiamen, 361021, China |
推荐引用方式 GB/T 7714 | Wang H.,Chen X.,Lu K.,et al. Wintertime N2O5 uptake coefficients over the North China Plain[J],2020,65(9). |
APA | Wang H..,Chen X..,Lu K..,Tan Z..,Ma X..,...&Zhang Y..(2020).Wintertime N2O5 uptake coefficients over the North China Plain.Science Bulletin,65(9). |
MLA | Wang H.,et al."Wintertime N2O5 uptake coefficients over the North China Plain".Science Bulletin 65.9(2020). |
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