RA0Each8h_

https://w3id.org/np/RA0Each8h_cN536aNTzIFyTF1ChTpPo3fTjNlctW4v8Ns

 Impact of Biomass Burning Organic Aerosol Volatility on Smoke Concentrations Downwind of Fires FAIRDigitalObject article ▼ comment... approve/disapprove... edit as derived nanopublication... create new with same template...

https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

acs.est.3c05017

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

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"Impact of Biomass Burning Organic Aerosol Volatility on Smoke Concentrations Downwind of Fires"

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

acs.est.3c05017

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"Biomass burning particulate matter (BBPM) affects regional air quality and global climate, with impacts expected to continue to grow over the coming years. We show that studies of North American fires have a systematic altitude dependence in measured BBPM normalized excess mixing ratio (NEMR; ΔPM/ΔCO), with airborne and high-altitude studies showing a factor of 2 higher NEMR than ground-based measurements. We report direct airborne measurements of BBPM volatility that partially explain the difference in the BBPM NEMR observed across platforms. We find that when heated to 40− 45 °C in an airborne thermal denuder, 19% of lofted smoke PM1 evaporates. Thermal denuder measurements are consistent with evaporation observed when a single smoke plume was sampled across a range of temperatures as the plume descended from 4 to 2 km altitude. We also demonstrate that chemical aging of smoke and differences in PM emission factors can not fully explain the platformdependent differences. When the measured PM volatility is applied to output from the High Resolution Rapid Refresh Smoke regional model, we predict a lower PM NEMR at the surface compared to the lofted smoke measured by aircraft. These results emphasize the significant role that gas-particle partitioning plays in determining the air quality impacts of wildfire smoke. KEYWORDS: Biomass burning organic aerosol volatility, volatility basis set. Major findings: Research regarding biomass burning organic aerosol volatility reveals a systematic altitude dependence in particulate matter concentrations, with airborne studies recording values twice as high as ground-based measurements. Direct airborne quantification demonstrates that approximately 19% of lofted smoke particulate matter evaporates when subjected to surface-level temperatures. These findings indicate that gas-particle partitioning, rather than chemical aging or initial emission factors, is the primary driver of platform-dependent differences in smoke density. Applying these volatility constraints to regional models reduces predicted surface smoke concentrations by 31%, aligning model outputs more closely with observed ground-level impacts."

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

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article

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

acs.est.3c05017

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0000-0002-0441-2614

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

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"demetriospagonis@weber.edu"

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

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Atmospheric Science

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

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"2022"

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https://pubs.acs.org/doi/pdf/1...st.3c05017?ref=article_openPDF

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"2023"

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021nxhr62

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Emily Regalado

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RADWTUfHUh

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Emily Regalado

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Attribution 4.0 International (CC BY 4.0)

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https://orcid.org/0009-0008-8411-2742

Emily Regalado

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"Emily Regalado"

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"2026-01-21T17:50:18.272Z"

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RArM5GTwgx

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Emily Regalado

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This is the identifier for this whole nanopublication. https://w3id.org/np/RA0Each8h_... This nanopublication http://purl.org/nanopub/x/wasCreatedAt was created at https://nanodash.knowledgepixels.com/

nanodash.knowledgepixels.com

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Emily Regalado, 21 Jan 2026, 17:50:18 UTC

References