On the contribution of nocturnal heterogeneous reactive nitrogen chemistry to particulate matter formation during wintertime pollution events in Northern Utah

McDuffie, Erin E.; Womack, Caroline C.; Fibiger, Dorothy L.; Dube, William P.; Franchin, Alessandro; Middlebrook, Ann M.; Goldberger, Lexie; Lee, Ben H.; Thornton, Joel A.; Moravek, Alexander; Murphy, Jennifer G.; Baasandorj, Munkhbayar; Brown, Steven S.

doi:https://doi.org/10.5194/acp-19-9287-2019

Articles | Volume 19, issue 14

https://doi.org/10.5194/acp-19-9287-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-9287-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 14

Research article

|

19 Jul 2019

Research article |

| 19 Jul 2019

On the contribution of nocturnal heterogeneous reactive nitrogen chemistry to particulate matter formation during wintertime pollution events in Northern Utah

Erin E. McDuffie, Caroline C. Womack, Dorothy L. Fibiger, William P. Dube, Alessandro Franchin, Ann M. Middlebrook, Lexie Goldberger, Ben H. Lee, Joel A. Thornton, Alexander Moravek, Jennifer G. Murphy, Munkhbayar Baasandorj, and Steven S. Brown

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Final revised paper (published on 19 Jul 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: 'Review of McDuffie et al.', Anonymous Referee #2, 09 Apr 2019
- AC1: 'Response to Referees', Erin E. McDuffie, 15 Jun 2019
RC2: 'Comment', Anonymous Referee #1, 06 May 2019
- AC1: 'Response to Referees', Erin E. McDuffie, 15 Jun 2019
AC1: 'Response to Referees', Erin E. McDuffie, 15 Jun 2019

Peer-review completion

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

AR by Erin E. McDuffie on behalf of the Authors (16 Jun 2019) Author's response Manuscript

ED: Publish as is (27 Jun 2019) by Yafang Cheng

AR by Erin E. McDuffie on behalf of the Authors (29 Jun 2019) Manuscript

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Short summary

Populated mountain basins, including the Salt Lake Valley (SLV) in Utah, suffer from wintertime stagnation events that trap emissions near the surface and cause fine particulate matter (PM_2.5) concentrations to reach unhealthy levels. Previously limited by a lack of nighttime measurements, this study uses 2017 UWFPS aircraft campaign data, in combination with a box model, to show that nitrogen chemistry above the surface at night is a major source of PM_2.5 during a wintertime event in the SLV.