Wintertime spatial distribution of ammonia and its emission sources in the Great Salt Lake region

Moravek, Alexander; Murphy, Jennifer G.; Hrdina, Amy; Lin, John C.; Pennell, Christopher; Franchin, Alessandro; Middlebrook, Ann M.; Fibiger, Dorothy L.; Womack, Caroline C.; McDuffie, Erin E.; Martin, Randal; Moore, Kori; Baasandorj, Munkhbayar; Brown, Steven S.

doi:https://doi.org/10.5194/acp-19-15691-2019

Articles | Volume 19, issue 24

Atmos. Chem. Phys., 19, 15691–15709, 2019

https://doi.org/10.5194/acp-19-15691-2019

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

Atmos. Chem. Phys., 19, 15691–15709, 2019

https://doi.org/10.5194/acp-19-15691-2019

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

Articles | Volume 19, issue 24

Research article 20 Dec 2019

Research article | 20 Dec 2019

Wintertime spatial distribution of ammonia and its emission sources in the Great Salt Lake region

Alexander Moravek et al.

Supplement

https://doi.org/10.5194/acp-19-15691-2019-supplement

Data sets

UWFPS campaign NOAA https://www.esrl.noaa.gov/csd/groups/csd7/measurements/2017uwfps/

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.