Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL081530 |
Widespread Pollution From Secondary Sources of Organic Aerosols During Winter in the Northeastern United States | |
Shah, Viral1,2; Jaegle, Lyatt1; Jimenez, Jose L.3,4; Schroder, Jason C.3,4; Campuzano-Jost, Pedro3,4; Campos, Teresa L.5,6; Reeves, John M.6; Stell, Meghan6,7; Brown, Steven S.3,8; Lee, Ben H.1; Lopez-Hilfiker, Felipe D.1; Thornton, Joel A.1 | |
2019-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:5页码:2974-2983 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Secondary organic aerosol (SOA) from pollution sources is thought to be a minor component of organic aerosol (OA) and fine particulate matter beyond the urban scale. Here we present airborne observations of OA in the northeastern United States, showing that 58% of OA over the region during winter is secondary and originates from pollution sources. We observed a doubling of OA mass from SOA formation in aged emissions, with unexpected similarity to OA growth observed in polluted areas in the summer. A regional model with a simple SOA parameterization based on summer measurements reproduces these winter observations and shows that pollution SOA is widespread, accounting for 14% of submicron particulate matter in near-surface air. This source of particulate matter is largely unaccounted for in air quality management in the northeastern United States and other polluted areas. Plain Language Summary Organic aerosol is a major contributor to fine particulate matter concentrations. The wintertime sources of organic aerosols in polluted areas have remained uncertain because of a lack of regional-scale measurements. We made aircraft-based observations of organic aerosols over the northeastern United States during winter. We observed that a majority of organic aerosols consist of secondary organic aerosols that form in the atmosphere from gases emitted from pollution sources. Prior to our measurements, the expectation was that wintertime pollution sources of secondary organic aerosols are minor outside urban areas. Our results show that their influence is ubiquitous over the entire eastern United States, and a better understanding of these sources can help in developing effective policies to reduce wintertime air pollution. |
英文关键词 | Secondary organic aerosols winter pollution aircraft northeastern United States |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462612900071 |
WOS关键词 | SOURCE APPORTIONMENT ; CARBON MEASUREMENTS ; HIGH-RESOLUTION ; AIR-POLLUTION ; LOS-ANGELES ; AIRCRAFT ; MODEL ; CHEMISTRY ; SEMIVOLATILE ; VOLATILITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/181661 |
专题 | 气候变化 |
作者单位 | 1.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA; 2.Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 3.Univ Colorado, Dept Chem, Boulder, CO 80309 USA; 4.Univ Colorado, CIRES, Boulder, CO 80309 USA; 5.Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling Lab, POB 3000, Boulder, CO 80307 USA; 6.Natl Ctr Atmospher Res, Earth Observing Lab, POB 3000, Boulder, CO 80307 USA; 7.Calif State Univ Monterey Bay, Undergrad Res Opportun Ctr, Seaside, CA USA; 8.NOAA, Chem Sci Div, Earth Syst Res Lab, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Shah, Viral,Jaegle, Lyatt,Jimenez, Jose L.,et al. Widespread Pollution From Secondary Sources of Organic Aerosols During Winter in the Northeastern United States[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(5):2974-2983. |
APA | Shah, Viral.,Jaegle, Lyatt.,Jimenez, Jose L..,Schroder, Jason C..,Campuzano-Jost, Pedro.,...&Thornton, Joel A..(2019).Widespread Pollution From Secondary Sources of Organic Aerosols During Winter in the Northeastern United States.GEOPHYSICAL RESEARCH LETTERS,46(5),2974-2983. |
MLA | Shah, Viral,et al."Widespread Pollution From Secondary Sources of Organic Aerosols During Winter in the Northeastern United States".GEOPHYSICAL RESEARCH LETTERS 46.5(2019):2974-2983. |
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