Agricultural fires in the southeastern U.S. during SEAC⁴RS: Emissions of trace gases and particles and evolution of ozone, reactive nitrogen, and organic aerosol

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dc.contributor.authorLiu, Xiaoxi
dc.contributor.authorZhang, Y.
dc.contributor.authorHuey, L. G.
dc.contributor.authorYokelson, R.J.
dc.contributor.authorWang, Y.
dc.contributor.authorJimenez, J. L.
dc.contributor.authorCampuzano-Jost, P.
dc.contributor.authorBeyersdorf, A.J.
dc.contributor.authorBlake, D.R.
dc.contributor.authorChoi, Y.
dc.contributor.authorSt. Clair, Jason
dc.contributor.authorCrounse, J.D.
dc.contributor.authorDay, D. A.
dc.contributor.authorDiskin, G.S.
dc.contributor.authorFried, A.
dc.contributor.authorHall, S. R.
dc.contributor.authorHanisco, T. F.
dc.contributor.authorKing, L. E.
dc.contributor.authorMeinardi, S.
dc.contributor.authorMikoviny, T.
dc.contributor.authorPalm, B. B.
dc.contributor.authorPeischl, J.
dc.contributor.authorPerring, A. E.
dc.contributor.authorPollack, I. B.
dc.contributor.authorRyerson, T. B.
dc.contributor.authorSachse, G.
dc.contributor.authorSchwarz, J. P.
dc.contributor.authorSimpson, I. J.
dc.contributor.authorTanner, D. J.
dc.contributor.authorThornhill, K. L.
dc.contributor.authorUllmann, K.
dc.contributor.authorWeber, R. J.
dc.contributor.authorWennberg, P. O.
dc.contributor.authorWisthaler, A.
dc.contributor.authorWolfe, G. M.
dc.contributor.authorZiemba, L. D.
dc.date.accessioned2020-06-17T15:27:33Z
dc.date.available2020-06-17T15:27:33Z
dc.date.issued2016-05-28
dc.description.abstractEmissions from 15 agricultural fires in the southeastern U.S. were measured from the NASA DC‐8 research aircraft during the summer 2013 Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC⁴RS) campaign. This study reports a detailed set of emission factors (EFs) for 25 trace gases and 6 fine particle species. The chemical evolution of the primary emissions in seven plumes was examined in detail for ~1.2 h. A Lagrangian plume cross‐section model was used to simulate the evolution of ozone (O₃), reactive nitrogen species, and organic aerosol (OA). Observed EFs are generally consistent with previous measurements of crop residue burning, but the fires studied here emitted high amounts of SO₂ and fine particles, especially primary OA and chloride. Filter‐based measurements of aerosol light absorption implied that brown carbon (BrC) was ubiquitous in the plumes. In aged plumes, rapid production of O₃, peroxyacetyl nitrate (PAN), and nitrate was observed with ΔO₃/ΔCO, ΔPAN/ΔNOy, and Δnitrate/ΔNOy reaching ~0.1, ~0.3, and ~0.3. For five selected cases, the model reasonably simulated O₃ formation but underestimated PAN formation. No significant evolution of OA mass or BrC absorption was observed. However, a consistent increase in oxygen‐to‐carbon (O/C) ratios of OA indicated that OA oxidation in the agricultural fire plumes was much faster than in urban and forest fire plumes. Finally, total annual SO₂, NOₓ , and CO emissions from agricultural fires in Arkansas, Louisiana, Mississippi, and Missouri were estimated (within a factor of ~2) to be equivalent to ~2% SO₂ from coal combustion and ~1% NOₓ and ~9% CO from mobile sources.en_US
dc.description.sponsorshipThis work was supported by NASA grant NNX12AB77G. R. Yokelson was supported by NASA Earth Science Division Awards NNX12AC20G and NNX14AP45G. PTR‐MS measurements during SEAC⁴RS were supported by the Austrian Federal Ministry for Transport, Innovation and Technology (bmvit) through the Austrian Space Applications Programme (ASAP) of the Austrian Research Promotion Agency (FFG). A.W. and T.M. received support from the Visiting Scientist Program at the National Institute of Aerospace (NIA). P.C.J., D.A.D., and J.L.J. were supported by NNX12AC03G and NNX15AT96G. CIT‐CIMS measurements were supported by NASA grants NNX12AC06G and NNX14AP46G‐ACCDAM. ISAF HCHO observations were supported by NASA SEAC⁴RS grant NNH10ZDA001N. The authors would also like to thank the SEAC⁴RS science team and the DC‐8 flight crews. Data from the SEAC⁴RS mission can be found at http://www‐air.larc.nasa.gov/cgi‐bin/ArcView/seac⁴rs and http://www‐air.larc.nasa.gov/missions/seac⁴rs/index.html.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016JD025040en_US
dc.format.extent32 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2faeg-8rdq
dc.identifier.citationLiu, X., et al. (2016), Agricultural fires inthe southeastern U.S. during SEAC⁴RS:Emissions of trace gases and particlesand evolution of ozone, reactive nitro-gen, and organic aerosol, J. Geophys.Res. Atmos., 121, 7383–7414,doi:10.1002/2016JD025040en_US
dc.identifier.urihttps://doi.org/10.1002/2016JD025040
dc.identifier.urihttp://hdl.handle.net/11603/18908
dc.language.isoen_USen_US
dc.publisherAGU Pubicationen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleAgricultural fires in the southeastern U.S. during SEAC⁴RS: Emissions of trace gases and particles and evolution of ozone, reactive nitrogen, and organic aerosolen_US
dc.typeTexten_US

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