Articles | Volume 18, issue 22
Atmos. Chem. Phys., 18, 16385–16398, 2018
https://doi.org/10.5194/acp-18-16385-2018
Atmos. Chem. Phys., 18, 16385–16398, 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 et al.

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AR by Xuejun Liu on behalf of the Authors (30 Oct 2018)  Author's response
ED: Publish as is (05 Nov 2018) by John Liggio
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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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