Articles | Volume 21, issue 3
Atmos. Chem. Phys., 21, 2125–2147, 2021
https://doi.org/10.5194/acp-21-2125-2021

Special issue: In-depth study of air pollution sources and processes within...

Atmos. Chem. Phys., 21, 2125–2147, 2021
https://doi.org/10.5194/acp-21-2125-2021
Research article
12 Feb 2021
Research article | 12 Feb 2021

Evaluating the sensitivity of radical chemistry and ozone formation to ambient VOCs and NOx in Beijing

Lisa K. Whalley et al.

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Latest update: 30 Nov 2022
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Short summary
To understand how emission controls will impact ozone, an understanding of the sources and sinks of OH and the chemical cycling between peroxy radicals is needed. This paper presents measurements of OH, HO2 and total RO2 taken in central Beijing. The radical observations are compared to a detailed chemistry model, which shows that under low NO conditions, there is a missing OH source. Under high NOx conditions, the model under-predicts RO2 and impacts our ability to model ozone.
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