edu.ucar.opensky::articles:18690 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T02:48:15.024260 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7mp54x8 https://doi.org/10.5067/Aircraft/SEAC4RS/Aerosol-TraceGas-Cloud https Related Dataset #1 SEAC4RS Field Campaign Data - W Agricultural fires in the southeastern U.S. during SEAC4RS: Emissions of trace gases and particles and evolution of ozone, reactive nitrogen, and organic aerosol 2016-06-27T00:00:00Z publication https://n2t.org/ark:/85065/d7mp54x8 https://doi.org/10.1002/2016JD025040 Liu, X. author Zhang, Y. author Huey, L. author Yokelson, R. author Wang, Y. author Jimenez, L. author Campuzano-Jost, P. author Beyersdorf, A. author Blake, D. author Choi, Y. author St. Clair, J. author Crounse, J. author Day, D. author Diskin, G. author Fried, A. author Hall, Samuel R. author Hanisco, T. author King, L. author Meinardi, S. author Mikoviny, T. author Palm, B. author Peischl, J. author Perring, A. author Pollack, I. author Ryerson, T. author Sachse, G. author Schwarz, J. author Simpson, I. author Tanner, J. author Thornhill, K. author Ullmann, Kirk author Weber, R. author Wennberg, P. author Wisthaler, A. author Wolfe, G. author Ziemba, L. author UCAR/NCAR - Library publisher Emissions 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 SO&#x2082 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. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2016 American Geophysical Union. None eng geoscientificInformation