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| DOI | 10.1016/j.atmosenv.2020.117914 |
| Changes to simulated global atmospheric composition resulting from recent revisions to isoprene oxidation chemistry | |
| Khan M.A.H.; Schlich B.-L.; Jenkin M.E.; Cooke M.C.; Derwent R.G.; Neu J.L.; Percival C.J.; Shallcross D.E. | |
| 发表日期 | 2021 |
| ISSN | 1352-2310 |
| 卷号 | 244 |
| 英文摘要 | Recent revisions to our understanding of the oxidation chemistry of isoprene have been incorporated into a well-established global atmospheric chemistry and transport model, STOCHEM-CRI. These revisions have previously been shown to increase the production and recycling of HOx radicals at lower NOx levels characteristic of the remote troposphere. The main aim of this study is to assess the resultant broader changes to atmospheric composition due to the recent revisions to isoprene oxidation chemistry. The impact of the increased isoprene-related HOx recycling is found to be significant on the reduction of volatile organic compounds (VOCs) lifetime, e.g. a decrease in isoprene's tropospheric burden by ~17%. The analysis of lifetime reduction of the potent greenhouse gas, methane, associated with the increased HOx recycling, suggests its significant lifetime reduction by ~5% in terms of the current literature. The revisions to the isoprene chemistry also reduce the amount of ozone (by up to 10%), but provide a significant increase in NO3 (by up to 30%) over equatorial forested regions, which can alter the oxidizing capacity of the troposphere. The calculated mixing ratios of formic acid are decreased which in turn leads to an increase in the inferred concentrations of Criegee intermediates due to reduced loss through reaction with formic acid (up to 80%) over the dominant isoprene emitting regions. © 2020 Elsevier Ltd |
| 关键词 | Atmospheric lifetimeEquatorial regionHOx recyclingIsoprene chemistryOxidation cycle |
| 语种 | 英语 |
| scopus关键词 | Atmospheric composition; Atmospheric movements; Formic acid; Greenhouse gases; Isoprene; Oxidation; Reaction intermediates; Recycling; Troposphere; Volatile organic compounds; Chemistry and transport models; Criegee intermediates; Lifetime reduction; Mixing ratios; Oxidation chemistry; Oxidizing capacity; Reduced loss; Atmospheric chemistry; formic acid; hydroxide; isoprene; methane; nitrate; ozone; volatile organic compound; atmospheric chemistry; atmospheric transport; chemical composition; formic acid; greenhouse gas; isoprene; methane; oxidation; ozone; recycling; reduction; volatile organic compound; Article; atmosphere; forest; oxidation; priority journal; troposphere |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/248870 |
| 作者单位 | Biogeochemistry Research Centre, School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, United Kingdom; Atmospheric Chemistry Services, Okehampton, Devon EX20 4QB, United Kingdom; Rdscientific, Newbury, Berkshire, United Kingdom; NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr, Pasadena, CA 91109, United States; Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Bellville, 7375, South Africa |
| 推荐引用方式 GB/T 7714 | Khan M.A.H.,Schlich B.-L.,Jenkin M.E.,et al. Changes to simulated global atmospheric composition resulting from recent revisions to isoprene oxidation chemistry[J],2021,244. |
| APA | Khan M.A.H..,Schlich B.-L..,Jenkin M.E..,Cooke M.C..,Derwent R.G..,...&Shallcross D.E..(2021).Changes to simulated global atmospheric composition resulting from recent revisions to isoprene oxidation chemistry.ATMOSPHERIC ENVIRONMENT,244. |
| MLA | Khan M.A.H.,et al."Changes to simulated global atmospheric composition resulting from recent revisions to isoprene oxidation chemistry".ATMOSPHERIC ENVIRONMENT 244(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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