气候变化领域集成服务门户(CCPortal): Dilution impacts on smoke aging: Evidence in Biomass Burning Observation Project (BBOP) data

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DOI	10.5194/acp-21-6839-2021
	Dilution impacts on smoke aging: Evidence in Biomass Burning Observation Project (BBOP) data
	Hodshire A.L.; Ramnarine E.; Akherati A.; Alvarado M.L.; Farmer D.K.; Jathar S.H.; Kreidenweis S.M.; Lonsdale C.R.; Onasch T.B.; Springston S.R.; Wang J.; Wang Y.; Kleinman L.I.; Sedlacek A.J.; Iii; Pierce J.R.
发表日期	2021
ISSN	1680-7316
起始页码	6839
结束页码	6855
卷号	21 期号:9
英文摘要	Biomass burning emits vapors and aerosols into the atmosphere that can rapidly evolve as smoke plumes travel downwind and dilute, affecting climate- and health-relevant properties of the smoke. To date, theory has been unable to explain observed variability in smoke evolution. Here, we use observational data from the Biomass Burning Observation Project (BBOP) field campaign and show that initial smoke organic aerosol mass concentrations can help predict changes in smoke aerosol aging markers, number concentration, and number mean diameter between 40-262 nm. Because initial field measurements of plumes are generally 10 min downwind, smaller plumes will have already undergone substantial dilution relative to larger plumes and have lower concentrations of smoke species at these observations closest to the fire. The extent to which dilution has occurred prior to the first observation is not a directly measurable quantity. We show that initial observed plume concentrations can serve as a rough indicator of the extent of dilution prior to the first measurement, which impacts photochemistry, aerosol evaporation, and coagulation. Cores of plumes have higher concentrations than edges. By segregating the observed plumes into cores and edges, we find evidence that particle aging, evaporation, and coagulation occurred before the first measurement. We further find that on the plume edges, the organic aerosol is more oxygenated, while a marker for primary biomass burning aerosol emissions has decreased in relative abundance compared to the plume cores. Finally, we attempt to decouple the roles of the initial concentrations and physical age since emission by performing multivariate linear regression of various aerosol properties (composition, size) on these two factors. © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	aerosol property; aging; biomass burning; concentration (composition); data; diameter; dilution; smoke; Indicator indicator
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/246923
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, United States; Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, United States; Atmospheric and Environmental Research, Inc., Lexington, MA 02421, United States; Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; Aerodyne Research Inc., Billerica, MA 01821, United States; Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, NY 11973, United States; Center for Aerosol Science and Engineering, Washington University, St. Louis, MO 63130, United States; Center for Aerosol Science and Engineering, Washington University, St. Louis, MO 63130, United States; Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, United States
推荐引用方式 GB/T 7714	Hodshire A.L.,Ramnarine E.,Akherati A.,et al. Dilution impacts on smoke aging: Evidence in Biomass Burning Observation Project (BBOP) data[J],2021,21(9).
APA	Hodshire A.L..,Ramnarine E..,Akherati A..,Alvarado M.L..,Farmer D.K..,...&Pierce J.R..(2021).Dilution impacts on smoke aging: Evidence in Biomass Burning Observation Project (BBOP) data.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(9).
MLA	Hodshire A.L.,et al."Dilution impacts on smoke aging: Evidence in Biomass Burning Observation Project (BBOP) data".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.9(2021).