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.
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.
the Creative Commons Attribution 4.0 License.
On the contribution of nocturnal heterogeneous reactive nitrogen chemistry to particulate matter formation during wintertime pollution events in Northern Utah
Erin E. McDuffie
Chemical Sciences Division, National Oceanic and Atmospheric
Administration, Boulder, CO, USA
Cooperative Institute for Research in Environmental Sciences,
University of Colorado, Boulder, CO, USA
Department of Chemistry, University of Colorado, Boulder, CO, USA
now at: Department of Physics and Atmospheric Science, Dalhousie
University, Halifax, NS, Canada
Caroline C. Womack
Chemical Sciences Division, National Oceanic and Atmospheric
Administration, Boulder, CO, USA
Cooperative Institute for Research in Environmental Sciences,
University of Colorado, Boulder, CO, USA
Dorothy L. Fibiger
Chemical Sciences Division, National Oceanic and Atmospheric
Administration, Boulder, CO, USA
Cooperative Institute for Research in Environmental Sciences,
University of Colorado, Boulder, CO, USA
now at: California Air Resources Board, Sacramento, CA, USA
William P. Dube
Chemical Sciences Division, National Oceanic and Atmospheric
Administration, Boulder, CO, USA
Cooperative Institute for Research in Environmental Sciences,
University of Colorado, Boulder, CO, USA
Alessandro Franchin
Chemical Sciences Division, National Oceanic and Atmospheric
Administration, Boulder, CO, USA
Cooperative Institute for Research in Environmental Sciences,
University of Colorado, Boulder, CO, USA
Ann M. Middlebrook
Chemical Sciences Division, National Oceanic and Atmospheric
Administration, Boulder, CO, USA
Lexie Goldberger
Department of Atmospheric Science, University of Washington, Seattle,
WA, USA
now at: ARM Aerial Facility, Pacific Northwest National
Laboratory, Richland, WA, USA
Ben H. Lee
Department of Atmospheric Science, University of Washington, Seattle,
WA, USA
Joel A. Thornton
Department of Atmospheric Science, University of Washington, Seattle,
WA, USA
Alexander Moravek
Department of Chemistry, University of Toronto, Toronto, ON, Canada
now at: Department of Chemistry, York University, Toronto, ON, Canada
Jennifer G. Murphy
Department of Chemistry, University of Toronto, Toronto, ON, Canada
Munkhbayar Baasandorj
Department of Atmospheric Sciences, University of Utah, Salt Lake
City, UT, USA
now at: Chevron Corporation, Houston, TX, USA
Chemical Sciences Division, National Oceanic and Atmospheric
Administration, Boulder, CO, USA
Department of Chemistry, University of Colorado, Boulder, CO, USA
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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 (PM2.5) 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 PM2.5 during a wintertime event in the SLV.
Populated mountain basins, including the Salt Lake Valley (SLV) in Utah, suffer from wintertime...
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