Articles | Volume 18, issue 22
https://doi.org/10.5194/acp-18-16385-2018
https://doi.org/10.5194/acp-18-16385-2018
Research article
 | 
19 Nov 2018
Research article |  | 19 Nov 2018

The vertical variability of ammonia in urban Beijing, China

Yangyang Zhang, Aohan Tang, Dandan Wang, Qingqing Wang, Katie Benedict, Lin Zhang, Duanyang Liu, Yi Li, Jeffrey L. Collett Jr., Yele Sun, and Xuejun Liu

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Latest update: 12 Jun 2024
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Short summary
Our study is the first to continually monitor the vertical concentration profile of NH3 in urban Beijing. Weekly concentrations averaged 13.3 ± 4.8 μg m−3. The highest NH3 concentrations were always observed between 32 and 63 m, decreasing toward the surface and toward higher altitudes. Our results demonstrate a NH3 rich atmosphere in urban Beijing, from the ground to at least 320 m. Regional transport from the south (intensive agricultural regions) contributed high NH3 concentrations in Beijing.
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