气候变化领域集成服务门户(CCPortal): Reconciling the total carbon budget for boreal forest wildfire emissions using airborne observations

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DOI	10.5194/acp-22-12493-2022
	Reconciling the total carbon budget for boreal forest wildfire emissions using airborne observations
	Hayden, Katherine L.; Li, Shao-Meng; Liggio, John; Wheeler, Michael J.; Wentzell, Jeremy J. B.; Leithead, Amy; Brickell, Peter; Mittermeier, Richard L.; Oldham, Zachary; Mihele, Cristian M.; Staebler, Ralf M.; Moussa, Samar G.; Darlington, Andrea; Wolde, Mengistu; Thompson, Daniel; Chen, Jack; Griffin, Debora; Eckert, Ellen; Ditto, Jenna C.; He, Megan; Gentner, Drew R.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	12493
结束页码	12523
卷号	22 期号:18 页码:31
英文摘要	Wildfire impacts on air quality and climate are expected to be exacerbated by climate change with the most pronounced impacts in the boreal biome. Despite the large geographic coverage, there is limited information on boreal forest wildfire emissions, particularly for organic compounds, which are critical inputs for air quality model predictions of downwind impacts. In this study, airborne measurements of 193 compounds from 15 instruments, including 173 non-methane organics compounds (NMOG), were used to provide the most detailed characterization, to date, of boreal forest wildfire emissions. Highly speciated measurements showed a large diversity of chemical classes highlighting the complexity of emissions. Using measurements of the total NMOG carbon (NMOG(T)), the Sigma NMOG was found to be 50 % +/- 3 % to 53 % +/- 3 % of NMOG(T), of which, the intermediate- and semi-volatile organic compounds (I/S VOCs) were estimated to account for 7 % to 10 %. These estimates of I/SVOC emission factors expand the volatility range of NMOG typically reported. Despite extensive speciation, a substantial portion of NMOG(T) remained unidentified (47 % +/- 15 % to 50 % +/- 15 %), with expected contributions from more highly-functionalized VOCs and I/SVOCs. The emission factors derived in this study improve wildfire chemical speciation profiles and are especially relevant for air quality modelling of boreal forest wildfires. These aircraft-derived emission estimates were further linked with those derived from satellite observations demonstrating their combined value in assessing variability in modelled emissions. These results contribute to the verification and improvement of models that are essential for reliable predictions of near-source and downwind pollution resulting from boreal forest wildfires.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000857123600001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273292
作者单位	Environment & Climate Change Canada; Peking University; National Research Council Canada; Natural Resources Canada; Canadian Forest Service; Yale University; University of Waterloo
推荐引用方式 GB/T 7714	Hayden, Katherine L.,Li, Shao-Meng,Liggio, John,et al. Reconciling the total carbon budget for boreal forest wildfire emissions using airborne observations[J],2022,22(18):31.
APA	Hayden, Katherine L..,Li, Shao-Meng.,Liggio, John.,Wheeler, Michael J..,Wentzell, Jeremy J. B..,...&Gentner, Drew R..(2022).Reconciling the total carbon budget for boreal forest wildfire emissions using airborne observations.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(18),31.
MLA	Hayden, Katherine L.,et al."Reconciling the total carbon budget for boreal forest wildfire emissions using airborne observations".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.18(2022):31.