Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-9831-2018 |
A very limited role of tropospheric chlorine as a sink of the greenhouse gas methane | |
Gromov, Sergey1,3,4; Brenninkmeijer, Carl A. M.1; Joeckel, Patrick2 | |
2018-07-12 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:13页码:9831-9843 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Russia |
英文摘要 | Unexpectedly large seasonal phase differences between CH4 concentration and its C-13 / C-12 isotopic ratio and their inter-annual variations observed in southern hemispheric time series have been attributed to the Cl + CH4 reaction, in which (CH4)-C-13 is discriminated strongly compared to OH + CH4, and have provided the only (indirect) evidence of a hemispheric-scale presence of oxidative cycle-relevant quantities of tropospheric atomic Cl. Our analysis of concurrent New Zealand and Antarctic time series of CH4 and CO mixing and isotope ratios shows that a corresponding C-13 / C-12 variability is absent in CO. Using the AC-GCM EMAC model and isotopic mass balancing for comparing the periods of presumably high and low Cl, it is shown that variations in extra-tropical Southern Hemisphere Cl cannot have exceeded 0.9 x 10(3) atoms cm(-3). It is demonstrated that the C-13 / C-12 ratio of CO is a sensitive indicator for the isotopic composition of reacted CH4 and therefore for its sources. Despite ambiguities about the yield of CO from CH4 oxidation (with this yield being an important factor in the budget of CO) and uncertainties about the isotopic composition of sources of CO (in particular biomass burning), the contribution of Cl to the removal of CH4 in the troposphere is probably much lower than currently assumed. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438465500003 |
WOS关键词 | LOWER ANTARCTIC STRATOSPHERE ; LARGE (CO)-C-13 DEFICIT ; OZONE HOLE CHEMISTRY ; ATMOSPHERIC METHANE ; ISOTOPIC COMPOSITION ; MOLECULAR CHLORINE ; C-13/C-12 RATIOS ; CL ATOM ; CYCLE 2 ; CO |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/21698 |
专题 | 地球科学 |
作者单位 | 1.Max Planck Inst Chem, Atmospher Chem Dept, Mainz, Germany; 2.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Phys Atmosphare, Oberpfaffenhofen, Wessling, Germany; 3.Inst Global Climate & Ecol Roshydromet, Moscow, Russia; 4.RAS IGCE, Moscow, Russia |
推荐引用方式 GB/T 7714 | Gromov, Sergey,Brenninkmeijer, Carl A. M.,Joeckel, Patrick. A very limited role of tropospheric chlorine as a sink of the greenhouse gas methane[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(13):9831-9843. |
APA | Gromov, Sergey,Brenninkmeijer, Carl A. M.,&Joeckel, Patrick.(2018).A very limited role of tropospheric chlorine as a sink of the greenhouse gas methane.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(13),9831-9843. |
MLA | Gromov, Sergey,et al."A very limited role of tropospheric chlorine as a sink of the greenhouse gas methane".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.13(2018):9831-9843. |
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