作者
Georgios I Gkatzelis, Matthew M Coggon, Chelsea E Stockwell, Rebecca S Hornbrook, Hannah Allen, Eric C Apel, Megan M Bela, Donald R Blake, Ilann Bourgeois, Steven S Brown, Pedro Campuzano-Jost, Jason M St. Clair, James H Crawford, John D Crounse, Douglas A Day, Joshua P DiGangi, Glenn S Diskin, Alan Fried, Jessica B Gilman, Hongyu Guo, Johnathan W Hair, Hannah S Halliday, Thomas F Hanisco, Reem Hannun, Alan Hills, L Gregory Huey, Jose L Jimenez, Joseph M Katich, Aaron Lamplugh, Young Ro Lee, Jin Liao, Jakob Lindaas, Stuart A McKeen, Tomas Mikoviny, Benjamin A Nault, J Andrew Neuman, John B Nowak, Demetrios Pagonis, Jeff Peischl, Anne E Perring, Felix Piel, Pamela S Rickly, Michael A Robinson, Andrew W Rollins, Thomas B Ryerson, Melinda K Schueneman, Rebecca H Schwantes, Joshua P Schwarz, Kanako Sekimoto, Vanessa Selimovic, Taylor Shingler, David J Tanner, Laura Tomsche, Krystal T Vasquez, Patrick R Veres, Rebecca Washenfelder, Petter Weibring, Paul O Wennberg, Armin Wisthaler, Glenn M Wolfe, Caroline C Womack, Lu Xu, Katherine Ball, Robert J Yokelson, Carsten Warneke
发表日期
2024/1/23
期刊
Atmospheric Chemistry and Physics
卷号
24
期号
2
页码范围
929-956
出版商
Copernicus Publications
简介
Extensive airborne measurements of non-methane organic gases (NMOGs), methane, nitrogen oxides, reduced nitrogen species, and aerosol emissions from US wild and prescribed fires were conducted during the 2019 NOAA/NASA Fire Influence on Regional to Global Environments and Air Quality campaign (FIREX-AQ). Here, we report the atmospheric enhancement ratios (ERs) and inferred emission factors (EFs) for compounds measured on board the NASA DC-8 research aircraft for nine wildfires and one prescribed fire, which encompass a range of vegetation types.
We use photochemical proxies to identify young smoke and reduce the effects of chemical degradation on our emissions calculations. ERs and EFs calculated from FIREX-AQ observations agree within a factor of 2, with values reported from previous laboratory and field studies for more than 80 % of the carbon- and nitrogen-containing species. Wildfire emissions are parameterized based on correlations of the sum of NMOGs with reactive nitrogen oxides (NO) to modified combustion efficiency (MCE) as well as other chemical signatures indicative of flaming/smoldering combustion, including carbon monoxide (CO), nitrogen dioxide (NO), and black carbon aerosol. The sum of primary NMOG EFs correlates to MCE with an of 0.68 and a slope of 296 51 g kg, consistent with previous studies. The sum of the NMOG mixing ratios correlates well with CO with an of 0.98 and a slope of 137 4 ppbv of NMOGs per parts per million by volume (ppmv) of CO, demonstrating that primary NMOG emissions can be estimated from CO. Individual nitrogen-containing species correlate better with NO, NO …
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