Articles | Volume 18, issue 14
https://doi.org/10.5194/acp-18-10483-2018
https://doi.org/10.5194/acp-18-10483-2018
Research article
 | 
23 Jul 2018
Research article |  | 23 Jul 2018

Fast particulate nitrate formation via N2O5 uptake aloft in winter in Beijing

Haichao Wang, Keding Lu, Xiaorui Chen, Qindan Zhu, Zhijun Wu, Yusheng Wu, and Kang Sun

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Latest update: 28 May 2024
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Short summary
The vertical measurement of NOx and O3 was carried out on a movable carriage on a tower during a winter heavy-haze episode in urban Beijing, China. We found that pNO3- formation via N2O5 uptake was significant at high altitudes (e.g., > 150 m), which was supported by the lower total oxidant (NO2 + O3) level at high altitudes than at ground level. This study highlights the fact that pNO3- formation via N2O5 uptake may be an important source of pNO3- in the urban airshed during wintertime.
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