Elucidating real-world vehicle emission factors from mobile  measurements over a large metropolitan region: a focus on  isocyanic acid, hydrogen cyanide, and black carbon

Wren, Sumi N.; Liggio, John; Han, Yuemei; Hayden, Katherine; Lu, Gang; Mihele, Cris M.; Mittermeier, Richard L.; Stroud, Craig; Wentzell, Jeremy J. B.; Brook, Jeffrey R.

doi:https://doi.org/10.5194/acp-18-16979-2018

Articles | Volume 18, issue 23

https://doi.org/10.5194/acp-18-16979-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-16979-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 23

Research article

|

30 Nov 2018

Research article |

| 30 Nov 2018

Elucidating real-world vehicle emission factors from mobile measurements over a large metropolitan region: a focus on isocyanic acid, hydrogen cyanide, and black carbon

Sumi N. Wren, John Liggio, Yuemei Han, Katherine Hayden, Gang Lu, Cris M. Mihele, Richard L. Mittermeier, Craig Stroud, Jeremy J. B. Wentzell, and Jeffrey R. Brook

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Final revised paper (published on 30 Nov 2018)
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Preprint (discussion started on 18 May 2018)
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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: 'Review', Anonymous Referee #1, 06 Aug 2018
- AC1: 'Response to referee 1 and 2', Sumi Wren, 21 Sep 2018
RC2: 'Review of Wren et al.', Anonymous Referee #2, 10 Aug 2018
- AC1: 'Response to referee 1 and 2', Sumi Wren, 21 Sep 2018

Peer-review completion

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

AR by Sumi Wren on behalf of the Authors (21 Sep 2018) Author's response Manuscript

ED: Publish as is (29 Oct 2018) by James Roberts

AR by Sumi Wren on behalf of the Authors (09 Nov 2018) Author's response Manuscript

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Short summary

We made measurements from a mobile laboratory across a large urban area and determined fleet-average vehicle emission factors (EFs) for a suite of traffic-related air pollutants. We present the first real-world EFs for isocyanic acid (HNCO) and hydrogen cyanide (HCN) and insight into their on-road variability. We find that vehicles may represent an important source of these air toxics at an urban scale. This work has implications for understanding population exposure to these species.