Articles | Volume 16, issue 5
https://doi.org/10.5194/acp-16-2747-2016
https://doi.org/10.5194/acp-16-2747-2016
Research article
 | 
04 Mar 2016
Research article |  | 04 Mar 2016

Detailed budget analysis of HONO in central London reveals a missing daytime source

J. D. Lee, L. K. Whalley, D. E. Heard, D. Stone, R. E. Dunmore, J. F. Hamilton, D. E. Young, J. D. Allan, S. Laufs, and J. Kleffmann

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Short summary
This paper presents field measurements of HONO and a range of other gas phase and particulate species from an urban background site in London. The measured daytime HONO cannot be reproduced with a simple box model and thus a significant daytime missing source of HONO is present. We show that this missing source could be responsible for 40 % of the OH radical source and 57 % of the OH initiation; hence its potential importance for atmospheric oxidation and ozone production.
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