Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031583 |
Efficient Nighttime Biogenic SOA Formation in a Polluted Residual Layer | |
Zaveri, Rahul A.1; Shilling, John E.1; Fast, Jerome D.1; Springston, Stephen R.2 | |
2020-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Organic nitrates formed from nighttime reaction between anthropogenic nitrate radicals (NO3) and biogenic volatile organic compounds (BVOCs) are an important but highly uncertain source of secondary organic aerosol (SOA). Here we report on the enhanced nighttime biogenic SOA formation observed in a polluted residual layer over Sacramento, California, the morning of 15 June 2010 during the Carbonaceous Aerosols and Radiative Effects Study (CARES). Trajectory analysis showed that the residual layer air, containing isoprene and trace amounts of monoterpenes left over after nighttime oxidation, was influenced by the San Francisco Bay Area emissions the previous evening. The residual layer aerosol was also enriched in nitrate, with about 64% of it estimated to be in the form of organic nitrates. The nitrate: organic mass ratio of the SOA was about 0.47 +/- 0.044, which corresponds to the range typically found in isoprene mononitrates. Assuming the SOA was composed of organic mononitrates, its nominal molecular weight was estimated at 186 +/- 11 g mol(-1), consistent with the highly functionalized isoprene hydroxynitrates that have been observed in the particle phase in the southeast United States. Overall, our findings show that the efficiency of nighttime biogenic SOA formation, expressed as the change in organic aerosol mass relative to carbon monoxide (Delta OA/Delta CO), equals similar to 100 mu g m(-3) ppmv and is comparable to the range previously estimated for enhanced daytime SOA formation from mixed anthropogenic and biogenic emissions during CARES. Assuming the SOA was formed from isoprene oxidation by NO3, we estimated mass yields of up to 0.55, consistent with previous field estimates. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529111600029 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; AIR-POLLUTION ; MASS-SPECTROMETRY ; HIGH-RESOLUTION ; NO3 OXIDATION ; UNITED-STATES ; ISOPRENE EPOXYDIOLS ; RADICAL CHEMISTRY ; NITRATE RADICALS ; REACTIVE UPTAKE |
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/280123 |
专题 | 气候变化 |
作者单位 | 1.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA; 2.Brookhaven Natl Lab, Environm Sci Dept, Upton, NY 11973 USA |
推荐引用方式 GB/T 7714 | Zaveri, Rahul A.,Shilling, John E.,Fast, Jerome D.,et al. Efficient Nighttime Biogenic SOA Formation in a Polluted Residual Layer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(6). |
APA | Zaveri, Rahul A.,Shilling, John E.,Fast, Jerome D.,&Springston, Stephen R..(2020).Efficient Nighttime Biogenic SOA Formation in a Polluted Residual Layer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(6). |
MLA | Zaveri, Rahul A.,et al."Efficient Nighttime Biogenic SOA Formation in a Polluted Residual Layer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.6(2020). |
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