气候变化领域集成服务门户(CCPortal): Aerosol size distribution changes in FIREX-AQ biomass burning plumes: the impact of plume concentration on coagulation and OA condensation/evaporation

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DOI	10.5194/acp-22-12803-2022
	Aerosol size distribution changes in FIREX-AQ biomass burning plumes: the impact of plume concentration on coagulation and OA condensation/evaporation
	June, Nicole A.; Hodshire, Anna L.; Wiggins, Elizabeth B.; Winstead, Edward L.; Robinson, Claire E.; Thornhill, K. Lee; Sanchez, Kevin J.; Moore, Richard H.; Pagonis, Demetrios; Guo, Hongyu; Campuzano-Jost, Pedro; Jimenez, Jose L.; Coggon, Matthew M.; Dean-Day, Jonathan M.; Bui, T. Paul; Peischl, Jeff; Yokelson, Robert J.; Alvarado, Matthew J.; Kreidenweis, Sonia M.; Jathar, Shantanu H.; Pierce, Jeffrey R.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	12803
结束页码	12825
卷号	22 期号:19 页码:23
英文摘要	The evolution of organic aerosol (OA) and aerosol size distributions within smoke plumes is uncertain due to the variability in rates of coagulation and OA condensation/evaporation between different smoke plumes and at different locations within a single plume. We use aircraft data from the FIREX-AQ campaign to evaluate differences in evolving aerosol size distributions, OA, and oxygen to carbon ratios (O : C) between and within smoke plumes during the first several hours of aging as a function of smoke concentration. The observations show that the median particle diameter increases faster in smoke of a higher initial OA concentration (> 1000 mu gm(-3)), with diameter growth of over 100 nm in 8 h - despite generally having a net decrease in OA enhancement ratios - than smoke of a lower initial OA concentration (< 100 mu gm(-3)), which had net increases in OA. Observations of OA and O : C suggest that evaporation and/or secondary OA formation was greater in less concentrated smoke prior to the first measurement (5-57 min after emission). We simulate the size changes due to coagulation and dilution and adjust for OA condensation/evaporation based on the observed changes in OA. We found that coagulation explains the majority of the diameter growth, with OA evaporation/condensation having a relatively minor impact. We found that mixing between the core and edges of the plume generally occurred on timescales of hours, slow enough to maintain differences in aging between core and edge but too fast to ignore the role of mixing for most of our cases.
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:000861802800001
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/273223
作者单位	Colorado State University; National Aeronautics & Space Administration (NASA); NASA Langley Research Center; University of Colorado System; University of Colorado Boulder; University of Colorado System; University of Colorado Boulder; National Aeronautics & Space Administration (NASA); NASA Ames Research Center; National Oceanic Atmospheric Admin (NOAA) - USA; University of Montana System; University of Montana; Colorado State University; Utah System of Higher Education; Weber State University
推荐引用方式 GB/T 7714	June, Nicole A.,Hodshire, Anna L.,Wiggins, Elizabeth B.,et al. Aerosol size distribution changes in FIREX-AQ biomass burning plumes: the impact of plume concentration on coagulation and OA condensation/evaporation[J],2022,22(19):23.
APA	June, Nicole A..,Hodshire, Anna L..,Wiggins, Elizabeth B..,Winstead, Edward L..,Robinson, Claire E..,...&Pierce, Jeffrey R..(2022).Aerosol size distribution changes in FIREX-AQ biomass burning plumes: the impact of plume concentration on coagulation and OA condensation/evaporation.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(19),23.
MLA	June, Nicole A.,et al."Aerosol size distribution changes in FIREX-AQ biomass burning plumes: the impact of plume concentration on coagulation and OA condensation/evaporation".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.19(2022):23.