Nitrous acid (HONO) emissions under real-world driving conditions from vehicles in a UK road tunnel

Kramer, Louisa J.; Crilley, Leigh R.; Adams, Thomas J.; Ball, Stephen M.; Pope, Francis D.; Bloss, William J.

doi:https://doi.org/10.5194/acp-20-5231-2020

Articles | Volume 20, issue 9

https://doi.org/10.5194/acp-20-5231-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-5231-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 9

Research article

|

05 May 2020

Research article |

| 05 May 2020

Nitrous acid (HONO) emissions under real-world driving conditions from vehicles in a UK road tunnel

Louisa J. Kramer, Leigh R. Crilley, Thomas J. Adams, Stephen M. Ball, Francis D. Pope, and William J. Bloss

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Final revised paper (published on 05 May 2020)
Supplement to the final revised paper
Preprint (discussion started on 03 Dec 2019)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'General Comment', Anonymous Referee #1, 03 Jan 2020
- AC2: 'Response to Reviewer 1', Louisa Kramer, 09 Mar 2020
RC2: 'Reviewer's Comments', Anonymous Referee #2, 09 Jan 2020
- AC1: 'Response to Reviewer 2', Louisa Kramer, 09 Mar 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Louisa Kramer on behalf of the Authors (15 Mar 2020) Author's response Manuscript

ED: Publish as is (20 Mar 2020) by Andreas Hofzumahaus

AR by Louisa Kramer on behalf of the Authors (28 Mar 2020)

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Short summary

HONO is a large source of OH radicals, which can drive VOC oxidation, leading to the formation of ozone and secondary organic aerosols. Here we investigate primary vehicle emissions of HONO from measurements in a road tunnel in Birmingham, UK. A HONO/NO_x emission ratio was detemined and compared to previous studies. Results indicate HONO/NO_x has not varied much over the last two decades and technologies aimed at reducing NO₂ may have also resulted in a reduction in direct HONO vehicle emissions.