Articles | Volume 19, issue 24
https://doi.org/10.5194/acp-19-15691-2019
© 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-19-15691-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Dec 2019
Research article |
| 20 Dec 2019
| 20 Dec 2019
Wintertime spatial distribution of ammonia and its emission sources in the Great Salt Lake region
Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
now at: Department of Chemistry, York University, Toronto, ON M3J 1P3, Canada
Jennifer G. Murphy
Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
Amy Hrdina
Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
now at: Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
John C. Lin
Department of Atmospheric Sciences, University of Utah, Salt Lake
City, UT 84112, USA
Christopher Pennell
Division of Air Quality, Utah Department of Environmental Quality,
Salt Lake City, UT 84114, USA
Alessandro Franchin
Cooperative Institute for Research in Environmental Sciences (CIRES),
University of Colorado Boulder, Boulder, CO 80309, USA
Chemical Sciences Division, NOAA Earth System Research Laboratory (ESRL), Boulder, CO 80305, USA
Ann M. Middlebrook
Chemical Sciences Division, NOAA Earth System Research Laboratory (ESRL), Boulder, CO 80305, USA
Dorothy L. Fibiger
Cooperative Institute for Research in Environmental Sciences (CIRES),
University of Colorado Boulder, Boulder, CO 80309, USA
Chemical Sciences Division, NOAA Earth System Research Laboratory (ESRL), Boulder, CO 80305, USA
now at: California Air Resources Board, Sacramento, CA 95814, USA
Caroline C. Womack
Cooperative Institute for Research in Environmental Sciences (CIRES),
University of Colorado Boulder, Boulder, CO 80309, USA
Chemical Sciences Division, NOAA Earth System Research Laboratory (ESRL), Boulder, CO 80305, USA
Erin E. McDuffie
Cooperative Institute for Research in Environmental Sciences (CIRES),
University of Colorado Boulder, Boulder, CO 80309, USA
Chemical Sciences Division, NOAA Earth System Research Laboratory (ESRL), Boulder, CO 80305, USA
Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
now at: Department of Physics & Atmospheric Science,
Dalhousie University, Halifax, NS B2H 4R2, Canada
Randal Martin
Department of Civil and Environmental Engineering, Utah State
University, Logan, UT 84322, USA
Kori Moore
Department of Civil and Environmental Engineering, Utah State
University, Logan, UT 84322, USA
now at: Space Dynamics Laboratory, Logan, UT 84341, USA
Munkhbayar Baasandorj
Department of Atmospheric Sciences, University of Utah, Salt Lake
City, UT 84112, USA
Division of Air Quality, Utah Department of Environmental Quality,
Salt Lake City, UT 84114, USA
Steven S. Brown
Chemical Sciences Division, NOAA Earth System Research Laboratory (ESRL), Boulder, CO 80305, USA
Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
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Latest update: 28 Nov 2025
Short summary
Ammonium nitrate is a major component of fine particulate matter of wintertime air pollution in the Great Salt Lake Region (UT, USA). We investigate the sources of ammonia in the region by using aircraft observations and comparing them to modelled ammonia mixing ratios based on emission inventory estimates. The results suggest that ammonia emissions are underestimated, specifically in regions with high agricultural activity, while ammonia in Salt Lake City is mainly of local origin.
Ammonium nitrate is a major component of fine particulate matter of wintertime air pollution in...
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