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Title: Trifluoromethyl Sulfur Pentafluoride (SF5CF3) and Sulfur Hexafluoride (SF6) from Dome Concordia (1965-1999)

Abstract

The sampling and analytical methods are described more fully in Sturges et al. (2000). In summary, air samples were pumped from consolidated deep snow (firn) at Dome Concordia (eastern Antarctica) in December 1998 and January 1999, from the surface to a depth of approximately 100 m. Air samples were analyzed with a gas chromatograph - mass spectrometer, with a detection limit of about 0.001 parts per trillion (ppt). A diffusive transport model was used to calculate the age of samples as a function of depth. Measurements of SF6 were used to determine the mean age of the firn air by comparison with extrapolated measurements from Cape Grim, Tasmania combined with estimates from industrial emissions (Maiss and Brenninkmeijer 1998, adapted by Sturges et al. 2000). Dates for SF5CF3 are different than for SF6 due to the lower diffusivity of SF5CF3: the SF6 ages were multiplied by the ratio of the free-air diffusion coefficient of SF5CF3 to that of SF6 (1.18). Free-air diffusion coefficients were determined by a semi-empirical formula based on molecular volumes (Fuller et al. 1966). Note that mean ages represent a very wide distribution of probable ages spanning many years, with an increasing spread of ages at increasing depth

Authors:
; ; ; ; ; ; ; ; ;
  1. School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom
  2. Ford Motor Company, Dearborn, Michigan
  3. Department of Meteorology, University of Reading, Reading, United Kingdom
  4. Institute for Meteorology and Geophysics, Johann Wolfgang Goethe University of Frankfurt, Frankfurt, Germany
  5. British Antarctic Survey, Natural Environmental Research Council, Cambridge, United Kingdom
  6. Atmospheric Chemistry Division, Max Planck Institute for Chemistry, Mainz, Germany
Publication Date:
Product Type:
Dataset
Research Org.:
Environmental System Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) (United States); Carbon Dioxide Information Analysis Center (CDIAC), Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Subject:
54 ENVIRONMENTAL SCIENCES
OSTI Identifier:
1394121
DOI:
https://doi.org/10.3334/CDIAC/ATG.005

Citation Formats

Sturges, W. T., Wallington, T. J., Hurley, M. D., Shine, K. P., Sihra, K., Engel, A., Oram, D. E., Penkett, S. A., Mulvaney, R., and Brenninkmeijer, C A. M.. Trifluoromethyl Sulfur Pentafluoride (SF5CF3) and Sulfur Hexafluoride (SF6) from Dome Concordia (1965-1999). United States: N. p., 2000. Web. doi:10.3334/CDIAC/ATG.005.
Sturges, W. T., Wallington, T. J., Hurley, M. D., Shine, K. P., Sihra, K., Engel, A., Oram, D. E., Penkett, S. A., Mulvaney, R., & Brenninkmeijer, C A. M.. Trifluoromethyl Sulfur Pentafluoride (SF5CF3) and Sulfur Hexafluoride (SF6) from Dome Concordia (1965-1999). United States. doi:https://doi.org/10.3334/CDIAC/ATG.005
Sturges, W. T., Wallington, T. J., Hurley, M. D., Shine, K. P., Sihra, K., Engel, A., Oram, D. E., Penkett, S. A., Mulvaney, R., and Brenninkmeijer, C A. M.. 2000. "Trifluoromethyl Sulfur Pentafluoride (SF5CF3) and Sulfur Hexafluoride (SF6) from Dome Concordia (1965-1999)". United States. doi:https://doi.org/10.3334/CDIAC/ATG.005. https://www.osti.gov/servlets/purl/1394121. Pub date:Sun Oct 01 00:00:00 EDT 2000
@article{osti_1394121,
title = {Trifluoromethyl Sulfur Pentafluoride (SF5CF3) and Sulfur Hexafluoride (SF6) from Dome Concordia (1965-1999)},
author = {Sturges, W. T. and Wallington, T. J. and Hurley, M. D. and Shine, K. P. and Sihra, K. and Engel, A. and Oram, D. E. and Penkett, S. A. and Mulvaney, R. and Brenninkmeijer, C A. M.},
abstractNote = {The sampling and analytical methods are described more fully in Sturges et al. (2000). In summary, air samples were pumped from consolidated deep snow (firn) at Dome Concordia (eastern Antarctica) in December 1998 and January 1999, from the surface to a depth of approximately 100 m. Air samples were analyzed with a gas chromatograph - mass spectrometer, with a detection limit of about 0.001 parts per trillion (ppt). A diffusive transport model was used to calculate the age of samples as a function of depth. Measurements of SF6 were used to determine the mean age of the firn air by comparison with extrapolated measurements from Cape Grim, Tasmania combined with estimates from industrial emissions (Maiss and Brenninkmeijer 1998, adapted by Sturges et al. 2000). Dates for SF5CF3 are different than for SF6 due to the lower diffusivity of SF5CF3: the SF6 ages were multiplied by the ratio of the free-air diffusion coefficient of SF5CF3 to that of SF6 (1.18). Free-air diffusion coefficients were determined by a semi-empirical formula based on molecular volumes (Fuller et al. 1966). Note that mean ages represent a very wide distribution of probable ages spanning many years, with an increasing spread of ages at increasing depth},
doi = {10.3334/CDIAC/ATG.005},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {10}
}