Articles | Volume 16, issue 5
https://doi.org/10.5194/acp-16-2747-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-2747-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
04 Mar 2016
Research article |
| 04 Mar 2016
Detailed budget analysis of HONO in central London reveals a missing daytime source
National Centre for Atmospheric Science, University of York, York, UK
Department of Chemistry, University of York, York, UK
L. K. Whalley
National Centre for Atmospheric Science, University of Leeds, Leeds, UK
School of Chemistry, University of Leeds, Leeds, UK
D. E. Heard
National Centre for Atmospheric Science, University of Leeds, Leeds, UK
School of Chemistry, University of Leeds, Leeds, UK
School of Chemistry, University of Leeds, Leeds, UK
R. E. Dunmore
Department of Chemistry, University of York, York, UK
J. F. Hamilton
Department of Chemistry, University of York, York, UK
D. E. Young
School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
now at: Department of Environmental Toxicology, University of California, Davis, CA 95616, USA
J. D. Allan
School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
National Centre for Atmospheric Science, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
S. Laufs
Physikalische und Theoretische Chemie/Fakultät Mathematik und Naturwissenschaften, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany
J. Kleffmann
Physikalische und Theoretische Chemie/Fakultät Mathematik und Naturwissenschaften, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany
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Latest update: 07 Nov 2025
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.
This paper presents field measurements of HONO and a range of other gas phase and particulate...
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