Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026926 |
Deriving Global OH Abundance and Atmospheric Lifetimes for Long-Lived Gases: A Search for CH3CCl3 Alternatives | |
Liang, Qing1,2; Chipperfield, Martyn P.3; Fleming, Eric L.1,4; Abraham, N. Luke5,6; Braesicke, Peter7; Burkholder, James B.8; Daniel, John S.8; Dhomse, Sandip3; Fraser, Paul J.9; Hardiman, Steven C.10; Jackman, Charles H.1; Kinnison, Douglas E.11; Krummel, Paul B.9; Montzka, Stephen A.12; Morgenstern, Olaf13; McCulloch, Archie14; Muhle, Jens15; Newman, Paul A.1; Orkin, Vladimir L.16; Pitari, Giovanni17; Prinn, Ronald G.18; Rigby, Matthew14; Rozanov, Eugene19,20; Stenke, Andrea19; Tummon, Fiona19; Velders, Guus J. M.21,22; Visioni, Daniele17; Weiss, Ray F.15 | |
2017-11-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:21 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; Germany; Australia; New Zealand; Italy; Switzerland; Netherlands |
英文摘要 | An accurate estimate of global hydroxyl radical (OH) abundance is important for projections of air quality, climate, and stratospheric ozone recovery. As the atmospheric mixing ratios of methyl chloroform (CH3CCl3) (MCF), the commonly used OH reference gas, approaches zero, it is important to find alternative approaches to infer atmospheric OH abundance and variability. The lack of global bottom-up emission inventories is the primary obstacle in choosing a MCF alternative. We illustrate that global emissions of long-lived trace gases can be inferred from their observed mixing ratio differences between the Northern Hemisphere (NH) and Southern Hemisphere (SH), given realistic estimates of their NH-SH exchange time, the emission partitioning between the two hemispheres, and the NH versus SH OH abundance ratio. Using the observed long-term trend and emissions derived from the measured hemispheric gradient, the combination of HFC-32 (CH2F2), HFC-134a (CH2FCF3, HFC-152a (CH3CHF2), and HCFC-22 (CHClF2), instead of a single gas, will be useful as a MCF alternative to infer global and hemispheric OH abundance and trace gas lifetimes. The primary assumption on which this multispecies approach relies is that the OH lifetimes can be estimated by scaling the thermal reaction rates of a reference gas at 272K on global and hemispheric scales. Thus, the derived hemispheric and global OH estimates are forced to reconcile the observed trends and gradient for all four compounds simultaneously. However, currently, observations of these gases from the surface networks do not provide more accurate OH abundance estimate than that from MCF. |
英文关键词 | hydroxyl CH3CCl3 lifetime OH |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417195500012 |
WOS关键词 | HYDROXYL RADICALS ; METHYL CHLOROFORM ; TROPOSPHERIC OH ; CHEMISTRY ; EMISSIONS ; MODEL ; TRENDS ; VARIABILITY ; TRANSPORT ; METHANE |
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/33397 |
专题 | 气候变化 |
作者单位 | 1.NASA Goddard Space Flight Ctr, Atmospher Chem & Dynam Lab, Greenbelt, MD 20771 USA; 2.GESTAR, Univ Space Res Assoc, Columbia, MD 21046 USA; 3.Univ Leeds, Sch Earth & Environm, Natl Ctr Earth Observat, Leeds, W Yorkshire, England; 4.Sci Syst & Applicat Inc, Lanham, MD USA; 5.Natl Ctr Atmospher Sci, Leeds, W Yorkshire, England; 6.Univ Cambridge, Dept Chem, Cambridge, England; 7.Karlsruhe Inst Technol, Karlsruhe, Germany; 8.NOAA, Chem Sci Div, Earth Syst Res Lab, Boulder, CO USA; 9.CSIRO Oceans & Atmosphere, Climate Sci Ctr, Aspendale, Vic, Australia; 10.Hadley Ctr, Met Off, Exeter, Devon, England; 11.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 12.NOAA, Global Monitoring Div, Earth Syst Res Lab, Boulder, CO USA; 13.Natl Inst Water & Atmospher Res, Wellington, New Zealand; 14.Univ Bristol, Sch Chem, Bristol, Avon, England; 15.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 16.NIST, Gaithersburg, MD 20899 USA; 17.Univ Aquila, Dept Phys & Chem Sci, Laquila, Italy; 18.MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 19.Swiss Fed Inst Technol, Inst Atmospher & Climate Sci, Zurich, Switzerland; 20.Davos World Radiat Ctr, Phys Meteorol Observ, Davos, Switzerland; 21.Natl Inst Publ Hlth & Environm, Bilthoven, Netherlands; 22.Univ Utrecht, Inst Marine & Atmospher Res, Utrecht, Netherlands |
推荐引用方式 GB/T 7714 | Liang, Qing,Chipperfield, Martyn P.,Fleming, Eric L.,et al. Deriving Global OH Abundance and Atmospheric Lifetimes for Long-Lived Gases: A Search for CH3CCl3 Alternatives[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(21). |
APA | Liang, Qing.,Chipperfield, Martyn P..,Fleming, Eric L..,Abraham, N. Luke.,Braesicke, Peter.,...&Weiss, Ray F..(2017).Deriving Global OH Abundance and Atmospheric Lifetimes for Long-Lived Gases: A Search for CH3CCl3 Alternatives.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(21). |
MLA | Liang, Qing,et al."Deriving Global OH Abundance and Atmospheric Lifetimes for Long-Lived Gases: A Search for CH3CCl3 Alternatives".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.21(2017). |
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