GSTDTAP  > 地球科学
DOI10.5194/acp-19-3481-2019
Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O) in the atmosphere
Vollmer, Martin K.1; Bernard, Francois2,3,7; Mitrevski, Blagoj4; Steele, L. Paul4; Trudinger, Cathy M.4; Reimann, Stefan1; Langenfelds, Ray L.4; Krummel, Paul B.4; Fraser, Paul J.4; Etheridge, David M.4; Curran, Mark A. J.5,6; Burkholder, James B.2
2019-03-20
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2019
卷号19期号:6页码:3481-3492
文章类型Article
语种英语
国家Switzerland; USA; Australia; France
英文摘要

The first atmospheric observations of octafluo-rooxolane (octafluorotetrahydrofuran, c-C4F8O), a persistent greenhouse gas, are reported. In addition, a complementary laboratory study of its most likely atmospheric loss processes, its infrared absorption spectrum, and global warming potential (GWP) are reported. First atmospheric measurements of c-C4F8O are provided from the Cape Grim Air Archive (41 degrees S, Tasmania, Australia, 1978-present), supplemented by two firn air samples from Antarctica, in situ measurements of ambient air at Aspendale, Victoria (38 degrees S), and a few archived air samples from the Northern Hemisphere. The atmospheric abundance in the Southern Hemisphere has monotonically grown over the past decades and leveled at 74 ppq (parts per quadrillion, femtomole per mole in dry air) by 2015-2018. The growth rate of c-C4F8O has decreased from a maximum in 2004 of 4.0 to < 0 : 25 ppq yr(-1) in 2017 and 2018. Using a 12-box atmospheric transport model, globally averaged yearly emissions and abundances of c-C4F8O are calculated for 1951-2018. Emissions, which we speculate to derive predominantly from usage of c-C4F8O as a solvent in the semiconductor industry, peaked at 0.15 (+/- 0:04, 2 sigma) kt yr(-1) in 2004 and have since declined to < 0 : 015 kt yr(-1) in 2017 and 2018. Cumulative emissions over the full range of our record amount to 2.8 (2.4-3.3) kt, which correspond to 34 Mt of CO2-equivalent emissions. Infrared and ultraviolet absorption spectra for c-C4F8O as well as the reactive channel rate coefficient for the O(D-1)+c-C4F8O reaction were determined from laboratory studies. On the basis of these experiments, a radiative efficiency of 0.430Wm(-2) ppb(-1) (parts per billion, nanomol mol(-1)) was determined, which is one of the largest found for synthetic greenhouse gases. The global annually averaged atmospheric lifetime, including mesospheric loss, is estimated to be > 3000 years. GWPs of 8975, 12 000, and 16 000 are estimated for the 20-, 100-, and 500-year time horizons, respectively.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000461782400001
WOS关键词INFRARED-ABSORPTION SPECTRA ; GLOBAL EMISSIONS ; C4F8O ; HISTORIES ; FIRN
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/28423
专题地球科学
作者单位1.Empa, Swiss Fed Labs Mat Sci & Technol, Lab Air Pollut & Environm Technol, Dubendorf, Switzerland;
2.NOAA, Earth Syst Res Lab, Boulder, CO USA;
3.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA;
4.CSIRO Oceans & Atmosphere, Climate Sci Ctr, Aspendale, Vic, Australia;
5.Australian Antarctic Div, Kingston, Tas, Australia;
6.Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia;
7.Inst Combust Aerotherm Reactivite & Environm, Observ Sci Univers Reg Ctr, CNRS, Orleans, France
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GB/T 7714
Vollmer, Martin K.,Bernard, Francois,Mitrevski, Blagoj,et al. Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O) in the atmosphere[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(6):3481-3492.
APA Vollmer, Martin K..,Bernard, Francois.,Mitrevski, Blagoj.,Steele, L. Paul.,Trudinger, Cathy M..,...&Burkholder, James B..(2019).Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O) in the atmosphere.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(6),3481-3492.
MLA Vollmer, Martin K.,et al."Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O) in the atmosphere".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.6(2019):3481-3492.
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