Airborne and ground-based measurements of the trace gases and particles emitted by prescribed fires in the United States

摘要: Abstract. We have measured emission factors for 19 trace gas species and particulate matter (PM2.5) from 14 prescribed fires in chaparral oak savanna the southwestern US, as well conifer forest understory southeastern US Sierra Nevada mountains of California. These are likely most extensive factor field measurements temperate biomass burning to date only published fuels. This study helps close gap emissions data available zone relative tropical burning. present first glycolaldehyde, a possible precursor aqueous phase secondary organic aerosol formation. also phenol, another precursor. Our confirm previous observations that urban deposition can impact NOx thus subsequent plume chemistry. For two fires, we both convective smoke our airborne platform unlofted residual smoldering combustion with ground-based platform. The was characterized by hydrocarbon oxygenated were up ten times higher than lofted plume, including high 1,3-butadiene isoprene concentrations which not observed plume. should be considered modeling air quality impacts disperses at ground level. show often ignored significantly estimates total emissions. Preliminary evidence suggests large monoterpenes smoke. lead an improved capacity model similar ecosystems.