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DOI | 10.1002/2016JD025784 |
A dual-chamber method for quantifying the effects of atmospheric perturbations on secondary organic aerosol formation from biomass burning emissions | |
Tkacik, Daniel S.1; Robinson, Ellis S.1; Ahern, Adam1; Saleh, Rawad1; Stockwell, Chelsea2; Veres, Patrick3; Simpson, Isobel J.4; Meinardi, Simone4; Blake, Donald R.4; Yokelson, Robert J.2; Presto, Albert A.1; Sullivan, Ryan C.1; Donahue, Neil M.1; Robinson, Allen L.1 | |
2017-06-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Biomass burning (BB) is a major source of atmospheric pollutants. Field and laboratory studies indicate that secondary organic aerosol (SOA) formation from BB emissions is highly variable. We investigated sources of this variability using a novel dual-smog-chamber method that directly compares the SOA formation from the same BB emissions under two different atmospheric conditions. During each experiment, we filled two identical Teflon smog chambers simultaneously with BB emissions from the same fire. We then perturbed the smoke with UV lights, UV lights plus nitrous acid (HONO), or dark ozone in one or both chambers. These perturbations caused SOA formation in nearly every experiment with an average organic aerosol (OA) mass enhancement ratio of 1.780.91 (mean1 sigma). However, the effects of the perturbations were highly variable ranging with OA mass enhancement ratios ranging from 0.7 (30% loss of OA mass) to 4.4 across the set of perturbation experiments. There was no apparent relationship between OA enhancement and perturbation type, fuel type, and modified combustion efficiency. To better isolate the effects of different perturbations, we report dual-chamber enhancement (DUCE), which is the quantity of the effects of a perturbation relative to a reference condition. DUCE values were also highly variable, even for the same perturbation and fuel type. Gas measurements indicate substantial burn-to-burn variability in the magnitude and composition of SOA precursor emissions, even in repeated burns of the same fuel under nominally identical conditions. Therefore, the effects of different atmospheric perturbations on SOA formation from BB emissions appear to be less important than burn-to-burn variability. |
英文关键词 | secondary organic aerosols biomass burning combustion aerosol chemistry |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131800031 |
WOS关键词 | FLIGHT MASS-SPECTROMETRY ; TRACE GASES ; PHOTOCHEMICAL OXIDATION ; LABORATORY MEASUREMENTS ; AIRCRAFT MEASUREMENTS ; SMOG CHAMBER ; M-XYLENE ; FIRES ; CHEMISTRY ; EVOLUTION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32419 |
专题 | 气候变化 |
作者单位 | 1.Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA; 2.Univ Montana, Dept Chem, Missoula, MT 59812 USA; 3.Natl Ocean & Atmospher Adm, Earth Syst Res Lab, Chem Sci Div, Boulder, CO USA; 4.Univ Calif Irvine, Dept Chem, Irvine, CA 92717 USA |
推荐引用方式 GB/T 7714 | Tkacik, Daniel S.,Robinson, Ellis S.,Ahern, Adam,et al. A dual-chamber method for quantifying the effects of atmospheric perturbations on secondary organic aerosol formation from biomass burning emissions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(11). |
APA | Tkacik, Daniel S..,Robinson, Ellis S..,Ahern, Adam.,Saleh, Rawad.,Stockwell, Chelsea.,...&Robinson, Allen L..(2017).A dual-chamber method for quantifying the effects of atmospheric perturbations on secondary organic aerosol formation from biomass burning emissions.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(11). |
MLA | Tkacik, Daniel S.,et al."A dual-chamber method for quantifying the effects of atmospheric perturbations on secondary organic aerosol formation from biomass burning emissions".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.11(2017). |
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