气候变化领域集成服务门户(CCPortal): Abundances; emissions; and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran; c-C4F8O) in the atmosphere

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DOI	10.5194/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 M.K.; Bernard F.; Mitrevski B.; Paul Steele L.; Trudinger C.M.; Reimann S.; Langenfelds R.L.; Krummel P.B.; Fraser P.J.; Etheridge D.M.; Curran M.A.J.; Burkholder J.B.
发表日期	2019
ISSN	16807316
起始页码	3481
结束页码	3492
卷号	19 期号:6
英文摘要	The first atmospheric observations of octafluorooxolane (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° S, Tasmania, Australia, 1978-present), supplemented by two firn air samples from Antarctica, in situ measurements of ambient air at Aspendale, Victoria (38° 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, 2σ) 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. 1D/Cc- 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. © Author(s) 2019.
语种	英语
scopus关键词	atmospheric chemistry; efficiency measurement; emission inventory; firn; fluorocarbon; greenhouse gas; in situ measurement; Southern Hemisphere; Australia; Tasmania
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144560
作者单位	Laboratory for Air Pollution and Environmental Technology, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland; Earth System Research Laboratory, NOAA, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Climate Science Centre, CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia; Australian Antarctic Division, Kingston, TAS, Australia; Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, TAS, Australia; Institut de Combustion Aérothermique, Réactivité et Environnement, Centre National de la Recherche Scientifique, Observatoire des Sciences de l'Univers en Région Centre, Orléans, France
推荐引用方式 GB/T 7714	Vollmer M.K.,Bernard F.,Mitrevski B.,et al. Abundances; emissions; and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran; c-C4F8O) in the atmosphere[J],2019,19(6).
APA	Vollmer M.K..,Bernard F..,Mitrevski B..,Paul Steele L..,Trudinger C.M..,...&Burkholder J.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).
MLA	Vollmer M.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).