Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1810774116 |
Anthropogenic enhancements to production of highly oxygenated molecules from autoxidation | |
Pye, Havala O. T.1; 39;Ambro, Emma L.2 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:14页码:6641-6646 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Finland; Peoples R China; Austria |
英文摘要 | Atmospheric oxidation of natural and anthropogenic volatile organic compounds (VOCs) leads to secondary organic aerosol (SOA), which constitutes a major and often dominant component of atmospheric fine particulate matter (PM2.5). Recent work demonstrates that rapid autoxidation of organic peroxy radicals (RO2) formed during VOC oxidation results in highly oxygenated organic molecules (HOM) that efficiently form SOA. As NOx emissions decrease, the chemical regime of the atmosphere changes to one in which RO2 autoxidation becomes increasingly important, potentially increasing PM2.5, while oxidant availability driving RO2 formation rates simultaneously declines, possibly slowing regional PM2.5 formation. Using a suite of in situ aircraft observations and laboratory studies of HOM, together with a detailed molecular mechanism, we show that although autoxidation in an archetypal biogenic VOC system becomes more competitive as NOx decreases, absolute HOM production rates decrease due to oxidant reductions, leading to an overall positive coupling between anthropogenic NOx and localized biogenic SOA from autoxidation. This effect is observed in the Atlanta, Georgia, urban plume where HOM is enhanced in the presence of elevated NO, and predictions for Guangzhou, China, where increasing HOM-RO2 production coincides with increases in NO from 1990 to 2010. These results suggest added benefits to PM2.5 abatement strategies come with NOx emission reductions and have implications for aerosol-climate interactions due to changes in global SOA resulting from NOx interactions since the preindustrial era. |
英文关键词 | autoxidation SOA monoterpenes PM2.5 aerosol |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463069900027 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; VOLATILITY BASIS-SET ; ALPHA-PINENE ; ATMOSPHERIC OXIDATION ; MULTIFUNCTIONAL PRODUCTS ; REACTIVE NITROGEN ; UNITED-STATES ; BETA-PINENE ; PHASE ; OZONOLYSIS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/205080 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.US EPA, Natl Exposure Res Lab, Res Triangle Pk, NC 27711 USA; 2.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA; 3.Univ Washington, Dept Chem, Seattle, WA 98195 USA; 4.Univ Eastern Finland, Dept Appl Phys, Kuopio 70211, Finland; 5.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA; 6.NOAA, Chem Sci Div, Earth Syst Res Lab, Boulder, CO 80305 USA; 7.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 8.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA; 9.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China; 10.Harbin Inst Technol, Sch Environm, Harbin 150001, Heilongjiang, Peoples R China; 11.Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China; 12.NASA, Goddard Space Flight Ctr, Atmospher Chem & Dynam Lab, Greenbelt, MD 20771 USA; 13.Univ Space Res Assoc, Goddard Earth Sci Technol & Res, Columbia, MD 21046 USA; 14.Finnish Meteorol Inst, Atmospher Composit Res, FI-00101 Helsinki, Finland; 15.Univ Innsbruck, Dept Atmospher & Cryospher Sci, A-6020 Innsbruck, Austria; 16.Univ Colorado, Dept Chem, Boulder, CO 80309 USA; 17.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Pye, Havala O. T.,39;Ambro, Emma L.. Anthropogenic enhancements to production of highly oxygenated molecules from autoxidation[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(14):6641-6646. |
APA | Pye, Havala O. T.,&39;Ambro, Emma L..(2019).Anthropogenic enhancements to production of highly oxygenated molecules from autoxidation.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(14),6641-6646. |
MLA | Pye, Havala O. T.,et al."Anthropogenic enhancements to production of highly oxygenated molecules from autoxidation".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.14(2019):6641-6646. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论