Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 16, issue 10
Articles | Volume 16, issue 10
https://doi.org/10.5194/acp-16-6355-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-6355-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 16, issue 10
Research article
 | 
24 May 2016
Research article |  | 24 May 2016

Formation of reactive nitrogen oxides from urban grime photochemistry

Alyson M. Baergen and D. James Donaldson

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Short summary
"Urban grime" films form from the deposition of atmospheric constituents on urban surfaces exposed to the atmosphere. An important component is nitrate, which is thought to represent a final loss channel of nitrogen oxides from the atmosphere. In this study we show that nitrate photolysis on grime is a significant loss process and gives rise to gas phase nitrogen oxides, effectively recycling them to the atmosphere and thus impacting local ozone levels.
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