Atmos. Chem. Phys. Discuss., 12, 869-885, 2012
www.atmos-chem-phys-discuss.net/12/869/2012/
doi:10.5194/acpd-12-869-2012
© Author(s) 2012. This work is distributed
under the Creative Commons Attribution 3.0 License.
Review Status
This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Emissions halted of the potent greenhouse gas SF5CF3
W. T. Sturges1, D. E. Oram1,2, J. C. Laube1, C. E. Reeves1, M. J. Newland1, C. Hogan1, P. Martinerie3, E. Witrant4, C. A. M. Brenninkmeijer5, T. J. Schuck5, and P. J. Fraser6
1The School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
2National Centre for Atmospheric Science, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
3UJF – Grenoble 1/CNRS, Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE) UMR 5183, Grenoble, 38041, France
4Grenoble Image Parole Signal Automatique (GIPSA-lab), Université Joseph Fourier/CNRS, BP 46, 38 402 Saint Martin d'Hères, France
5Max Planck Institute for Chemistry, Air Chemistry Division, Mainz, Germany
6Centre for Australian Weather and Climate Research, Commonwealth Scientific and Industrial Research Organisation, Aspendale, Victoria 3195, Australia

Abstract. Long term measurements in background air (Cape Grim, Tasmania) and firn air (NEEM, Greenland) of the "super" greenhouse gas SF5CF3 show that emissions declined after the late 1990s, having grown since the 1950s, and became indistinguishable from zero after 2003. It is concluded that this is due to the cessation of global production of perfluorooctyl sulfonate-based fluorochemicals. An earlier observation of closely correlated atmospheric abundances of SF5CF3 and SF6 are shown here to have likely been purely coincidental, as their respective trends diverged after 2002. Due to its long lifetime (ca. 900 yr), atmospheric concentrations of SF5CF3 have not declined, and it is now well mixed between hemispheres, as is also shown here from interhemispheric aircraft measurements. Total cumulative emissions of SF5CF3 amount to around 5 kT.

Citation: Sturges, W. T., Oram, D. E., Laube, J. C., Reeves, C. E., Newland, M. J., Hogan, C., Martinerie, P., Witrant, E., Brenninkmeijer, C. A. M., Schuck, T. J., and Fraser, P. J.: Emissions halted of the potent greenhouse gas SF5CF3, Atmos. Chem. Phys. Discuss., 12, 869-885, doi:10.5194/acpd-12-869-2012, 2012.
 
Search ACPD
Discussion Paper
    XML
    Citation
    Final Revised Paper
    Share