Womack, C. C., McDuffie, E. E., Edwards, Peter orcid.org/0000-0002-1076-6793 et al. (27 more authors) (2019) An odd oxygen framework for wintertime ammonium nitrate aerosol pollution in urban areas: NOx and VOC control as mitigation strategies. Geophysical Research Letters. ISSN 0094-8276
Abstract
Wintertime ammonium nitrate aerosol pollution is a severe air quality issue affecting both developed and rapidly urbanizing regions from Europe to East Asia. In the US, it is acute in western basins subject to inversions that confine pollutants near the surface. Measurements and modeling of a wintertime pollution episode in Salt Lake City, Utah demonstrates that ammonium nitrate is closely related to photochemical ozone through a common parameter, total odd oxygen, Ox,total. We show that the traditional NOx‐VOC framework for evaluating ozone mitigation strategies also applies to ammonium nitrate. Despite being nitrate‐limited, ammonium nitrate aerosol pollution in Salt Lake City is responsive to VOC control and, counterintuitively, not initially responsive to NOx control. We demonstrate simultaneous nitrate limitation and NOx saturation and suggest this phenomenon may be general. This finding may identify an unrecognized control strategy to address a global public health issue in regions with severe winter aerosol pollution.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019, American Geophysical Union. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 09 May 2019 09:50 |
Last Modified: | 19 Oct 2024 00:01 |
Published Version: | https://doi.org/10.1029/2019GL082028 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1029/2019GL082028 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:145858 |
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Filename: Womack_et_al_2019_Geophysical_Research_Letters.pdf
Description: An Odd Oxygen Framework for Wintertime AmmoniumNitrate Aerosol Pollution in Urban Areas: NOxandVOC Control as Mitigation Strategies