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

Autor:	Pagonis D; Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States.; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States.; Department of Chemistry and Biochemistry, Weber State University, Ogden 84408, Utah, United States., Selimovic V; Department of Chemistry, University of Montana, Missoula 59812, Montana, United States., Campuzano-Jost P; Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States.; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States., Guo H; Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States.; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States., Day DA; Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States.; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States., Schueneman MK; Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States.; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States., Nault BA; Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States.; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States., Coggon MM; NOAA Chemical Sciences Laboratory, Boulder 80305, Colorado, United States., DiGangi JP; NASA Langley Research Center, Hampton 23666, Virginia, United States., Diskin GS; NASA Langley Research Center, Hampton 23666, Virginia, United States., Fortner EC; Aerodyne Research, Inc., Billerica 01821, Massachusetts, United States., Gargulinski EM; National Institute of Aerospace, Hampton 23666, Virginia, United States., Gkatzelis GI; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States.; NOAA Chemical Sciences Laboratory, Boulder 80305, Colorado, United States., Hair JW; NASA Langley Research Center, Hampton 23666, Virginia, United States., Herndon SC; Aerodyne Research, Inc., Billerica 01821, Massachusetts, United States., Holmes CD; Florida State University Department of Earth, Ocean and Atmospheric Science, Tallahassee 32304, Florida, United States., Katich JM; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States.; NOAA Chemical Sciences Laboratory, Boulder 80305, Colorado, United States., Nowak JB; NASA Langley Research Center, Hampton 23666, Virginia, United States., Perring AE; Department of Chemistry, Colgate University, Hamilton 13346, New York, United States., Saide P; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles 90095, California, United States.; Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles 90095, California, United States., Shingler TJ; NASA Langley Research Center, Hampton 23666, Virginia, United States., Soja AJ; NASA Langley Research Center, Hampton 23666, Virginia, United States., Thapa LH; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles 90095, California, United States., Warneke C; NOAA Chemical Sciences Laboratory, Boulder 80305, Colorado, United States., Wiggins EB; NASA Langley Research Center, Hampton 23666, Virginia, United States., Wisthaler A; Department of Chemistry, University of Oslo, Oslo 0371, Norway.; Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck 6020, Austria., Yacovitch TI; Aerodyne Research, Inc., Billerica 01821, Massachusetts, United States., Yokelson RJ; Department of Chemistry, University of Montana, Missoula 59812, Montana, United States., Jimenez JL; Department of Chemistry, University of Colorado Boulder, Boulder 80309, Colorado, United States.; Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder 80309, Colorado, United States.
Jazyk:	angličtina
Zdroj:	Environmental science & technology [Environ Sci Technol] 2023 Nov 07; Vol. 57 (44), pp. 17011-17021. Date of Electronic Publication: 2023 Oct 24.
DOI:	10.1021/acs.est.3c05017
Abstrakt:	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 PM 1 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 platform-dependent 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.
Databáze:	MEDLINE
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