globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2109
论文题名:
Newly detected ozone-depleting substances in the atmosphere
作者: Laube J.C.; Newland M.J.; Hogan C.; Brenninkmeijer C.A.M.; Fraser P.J.; Martinerie P.; Oram D.E.; Reeves C.E.; Röckmann T.; Schwander J.; Witrant E.; Sturges W.T.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期:4
起始页码: 266
结束页码: 269
语种: 英语
Scopus关键词: air sampling ; atmospheric pollution ; CFC ; global climate ; human activity ; hydrochlorofluorocarbon ; Montreal Protocol ; ozone ; spatiotemporal analysis ; stratosphere ; Arctic ; Australia ; Greenland ; Tasmania
英文摘要: Ozone-depleting substances emitted through human activities cause large-scale damage to the stratospheric ozone layer, and influence global climate. Consequently, the production of many of these substances has been phased out; prominent examples are the chlorofluorocarbons (CFCs), and their intermediate replacements, the hydrochlorofluorocarbons (HCFCs). So far, seven types of CFC and six types of HCFC have been shown to contribute to stratospheric ozone destruction. Here, we report the detection and quantification of a further three CFCs and one HCFC. We analysed the composition of unpolluted air samples collected in Tasmania between 1978 and 2012, and extracted from deep firn snow in Greenland in 2008, using gas chromatography with mass spectrometric detection. Using the firn data, we show that all four compounds started to emerge in the atmosphere in the 1960s. Two of the compounds continue to accumulate in the atmosphere. We estimate that, before 2012, emissions of all four compounds combined amounted to more than 74,000 tonnes. This is small compared with peak emissions of other CFCs in the 1980s of more than one million tonnes each year. However, the reported emissions are clearly contrary to the intentions behind the Montreal Protocol, and raise questions about the sources of these gases. © 2014 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106561
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom; Max Planck Institute for Chemistry, Air Chemistry Division, Hahn-Meitner-Weg 1, 55128 Mainz, Germany; Centre for AustralianWeather and Climate Research, Commonwealth Scientific and Industrial Research Organisation, Aspendale, VIC 3195, Australia; CNRS, LGGE, F-38041 Grenoble, France; Univ. Grenoble Alpes, LGGE, F-38041 Grenoble, France; National Centre for Atmospheric Science, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom; Institute for Marine and Atmospheric Research, Utrecht University, Princetonplein 5, 3584 CC Utrecht, Netherlands; Physics Institute, University of Berne, Sidlerstrasse 5, CH-3012 Bern, Switzerland; UJF-Grenoble1, CNRS, Grenoble Image Parole Signal Automatique (GIPSA-lab), UMR 5216, B.P. 46, F-38402 StMartin d'Hères, France; School of Geography, College of Life and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom

Recommended Citation:
Laube J.C.,Newland M.J.,Hogan C.,et al. Newly detected ozone-depleting substances in the atmosphere[J]. Nature Geoscience,2014-01-01,7(4)
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