Simulating the impacts of regional wildfire smoke on ozone using a coupled fire-atmosphere-chemistry model.
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| Title: | Simulating the impacts of regional wildfire smoke on ozone using a coupled fire-atmosphere-chemistry model. |
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| Authors: | Mallia, Derek V.1 (AUTHOR), White, Cambria1 (AUTHOR), Farguell, Angel2 (AUTHOR), Mandel, Jan3 (AUTHOR), Kochanski, Adam K.1,2 (AUTHOR) adam.kochanski@sjsu.edu |
| Source: | Atmospheric Environment. Nov2025, Vol. 360, pN.PAG-N.PAG. 1p. |
| Subject Terms: | *Ozone, *Smoke, *Air quality, *Wildfires, *Aerosols, Transport theory, Physical & theoretical chemistry |
| Geographic Terms: | United States |
| Abstract: | Wildland fires emit pollutants such as fine particulates (PM 2.5), and ozone (O 3) precursors that can adversely impact air quality. To better understand processes that directly influence smoke transport and plume chemistry, this study leveraged a coupled fire-atmosphere model (WRF-SFIRE-Chem) to quantify the contributions of wildfire smoke to O 3 relative to regional anthropogenic emissions. Coupled fire-atmosphere-chemistry simulations were also used to examine how aerosol radiative feedbacks, i.e., smoke shading, modifies smoke transport and plume chemistry. This study investigated a major smoke episode that occurred during the record-breaking 2020 western U.S. wildfire season. Overall, WRF-SFIRE-Chem was able to reproduce the evolution of a regional smoke plume for the August 2020 smoke event. Sensitivity simulations from WRF-SFIRE-Chem show that O 3 contributions from wildfire smoke (21 ± 4.4 ppb) were much larger than O 3 enhancements from regional anthropogenic emission sources (11 ± 1.3 ppb). Smoke shading also had a large impact on meteorology where incoming solar radiation and 2-m temperature underneath the smoke plume decreased by ∼400 W m−2 and 4 °C, respectively. Smoke shading also altered smoke transport and reduced O 3 concentrations within the smoke plume by up to 10 ppb. These results suggest that sizable enhancements in O 3 can occur, even in the absence of regional anthropogenic emissions. This research also highlights the importance of accounting for smoke shading within chemical transport models, which proved to be important in the context of both smoke transport and plume photochemistry. • Generated the first coupled-fire atmosphere model simulation with aerosol physics and ozone chemistry. • Ozone was more sensitive to wildfire sources than anthropogenic emissions during the 2020 western U.S. wildfire season. • Smoke shading alters smoke transport and chemistry, highlighting the need for coupled modeling approaches. [ABSTRACT FROM AUTHOR] |
| Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
| FullText | Text: Availability: 0 |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 187138400 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Simulating the impacts of regional wildfire smoke on ozone using a coupled fire-atmosphere-chemistry model. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mallia%2C+Derek+V%2E%22">Mallia, Derek V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22White%2C+Cambria%22">White, Cambria</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Farguell%2C+Angel%22">Farguell, Angel</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mandel%2C+Jan%22">Mandel, Jan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kochanski%2C+Adam+K%2E%22">Kochanski, Adam K.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> adam.kochanski@sjsu.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Atmospheric+Environment%22">Atmospheric Environment</searchLink>. Nov2025, Vol. 360, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Ozone%22">Ozone</searchLink><br />*<searchLink fieldCode="DE" term="%22Smoke%22">Smoke</searchLink><br />*<searchLink fieldCode="DE" term="%22Air+quality%22">Air quality</searchLink><br />*<searchLink fieldCode="DE" term="%22Wildfires%22">Wildfires</searchLink><br />*<searchLink fieldCode="DE" term="%22Aerosols%22">Aerosols</searchLink><br /><searchLink fieldCode="DE" term="%22Transport+theory%22">Transport theory</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+%26+theoretical+chemistry%22">Physical & theoretical chemistry</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22United+States%22">United States</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Wildland fires emit pollutants such as fine particulates (PM 2.5), and ozone (O 3) precursors that can adversely impact air quality. To better understand processes that directly influence smoke transport and plume chemistry, this study leveraged a coupled fire-atmosphere model (WRF-SFIRE-Chem) to quantify the contributions of wildfire smoke to O 3 relative to regional anthropogenic emissions. Coupled fire-atmosphere-chemistry simulations were also used to examine how aerosol radiative feedbacks, i.e., smoke shading, modifies smoke transport and plume chemistry. This study investigated a major smoke episode that occurred during the record-breaking 2020 western U.S. wildfire season. Overall, WRF-SFIRE-Chem was able to reproduce the evolution of a regional smoke plume for the August 2020 smoke event. Sensitivity simulations from WRF-SFIRE-Chem show that O 3 contributions from wildfire smoke (21 ± 4.4 ppb) were much larger than O 3 enhancements from regional anthropogenic emission sources (11 ± 1.3 ppb). Smoke shading also had a large impact on meteorology where incoming solar radiation and 2-m temperature underneath the smoke plume decreased by ∼400 W m−2 and 4 °C, respectively. Smoke shading also altered smoke transport and reduced O 3 concentrations within the smoke plume by up to 10 ppb. These results suggest that sizable enhancements in O 3 can occur, even in the absence of regional anthropogenic emissions. This research also highlights the importance of accounting for smoke shading within chemical transport models, which proved to be important in the context of both smoke transport and plume photochemistry. • Generated the first coupled-fire atmosphere model simulation with aerosol physics and ozone chemistry. • Ozone was more sensitive to wildfire sources than anthropogenic emissions during the 2020 western U.S. wildfire season. • Smoke shading alters smoke transport and chemistry, highlighting the need for coupled modeling approaches. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=187138400 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.atmosenv.2025.121404 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Ozone Type: general – SubjectFull: Smoke Type: general – SubjectFull: Air quality Type: general – SubjectFull: Wildfires Type: general – SubjectFull: Aerosols Type: general – SubjectFull: Transport theory Type: general – SubjectFull: Physical & theoretical chemistry Type: general – SubjectFull: United States Type: general Titles: – TitleFull: Simulating the impacts of regional wildfire smoke on ozone using a coupled fire-atmosphere-chemistry model. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mallia, Derek V. – PersonEntity: Name: NameFull: White, Cambria – PersonEntity: Name: NameFull: Farguell, Angel – PersonEntity: Name: NameFull: Mandel, Jan – PersonEntity: Name: NameFull: Kochanski, Adam K. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 13522310 Numbering: – Type: volume Value: 360 Titles: – TitleFull: Atmospheric Environment Type: main |
| ResultId | 1 |
