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Measurements of reactive trace gases and variable O3 formation rates in some South Carolina biomass burning plumes [Discussions]Author(s): S. K. Akagi; R. J. Yokelson; I. R. Burling; S. Meinardi; I. Simpson; D. R. Blake; G. R. McMeeking; A. Sullivan; T. Lee; S. Kreidenweis; S. Urbanski; J. Reardon; D. W. T. Griffith; T. J. Johnson; D. R. Weise
Source: Atmospheric Chemistry and Physical Discussions. 12: 25255-25328.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
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DescriptionIn October–November 2011 we measured trace gas emission factors from seven prescribed fires in South Carolina (SC), US, using two Fourier transform infrared spectrometer (FTIR) systems and whole air sampling (WAS) into canisters followed by gas-chromatographic analysis. A total of 97 trace gas species were quantified from both airborne and ground-based sampling platforms, making this one of the most detailed field studies of fire emissions to date. The measurements include the first emission factors for a suite of monoterpenes produced by heating vegetative fuels during field fires. Due to rapid plume dilution, it was only possible to acquire high-quality downwind data for two other trace gas species (formaldehyde and methanol) during two of the fires. In all four of these cases, significant increases in formaldehyde and methanol were observed in <2 h. This is likely the first direct observation of post-emission methanol production in biomass burning plumes. Post-emission production of methanol does not always happen in young biomass burning plumes, and its occurrence in this study could have involved terpene precursors to a significant extent.
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CitationAkagi, S. K.; Yokelson, R. J.; Burling, I. R.; Meinardi, S.; Simpson, I.; Blake, D. R.; McMeeking, G. R.; Sullivan, A.; Lee, T.; Kreidenweis, S.; Urbanski, S.; Reardon, J.; Griffith, D. W. T.; Johnson, T. J.; Weise, D. R. 2012. Measurements of reactive trace gases and variable O3 formation rates in some South Carolina biomass burning plumes [Discussions]. Atmospheric Chemistry and Physical Discussions. 12: 25255-25328.
Keywordstrace gas emission, biomass burning, fires
- Airborne and ground-based measurements of the trace gases and particles emitted by prescribed fires in the United States
- Measurements of reactive trace gases and variable O3 formation rates in some South Carolina biomass burning plumes
- First results from a large, multi-platform study of trace gas and particle emissions from biomass burning
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