Dataset Information
Carbon-13 Isotopic Composition of Atmospheric Methane in Firn Air, South Pole and Siple Dome, Antarctica
Data DOI:
Cite as
Sowers, T. A. (2007) "Carbon-13 Isotopic Composition of Atmospheric Methane in Firn Air, South Pole and Siple Dome, Antarctica" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
This data set includes records of the delta carbon-13 (&delta;<sup>13</sup>C) of methane (CH<sub>4</sub>) in firn air from the South Pole and trapped in bubbles in a short ice core from Siple Dome, Antarctica. Using two firn air samples, one from January 1995 and the other from January 2001, investigators reconstructed records of the isotopic composition of paleoatmospheric methane covering the last 2 centuries, from 1820 to 2001. Data are in Microsoft Excel and Microsoft Word formats and are available via FTP.
Sowers, Todd A.
Date Created:
USAP-DC (current) - NSIDC (original)
Spatial Extent(s)
West: -148.3023, East: -148.3023, South: -81.403, North: -81.403
Temporal Extent(s)
Start: 1995-01-01 - End: 1995-01-31
Start: 2001-01-01 - End: 2001-01-31
  1. Leckrone, K. J., and J. M. Hayes. 1998. Water-induced errors in continuous flow carbon isotope ratio mass spectrometry. Analytical Chemistry 70, 2737-2744. Miller, J. B., K. A. Mack, R. Dissly, J. W. C. White, E. J. Dlugokencky, and P. Tans. 2002. Development of analytical methods and measurements of 13C/12C in atmospheric CH4 from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network. Journal of Geophysical Research 107, 4178-4193. Rice, A., A. A. Gotoh, H. O. Aijie, and S. C. Tyler. 2001. High-precision continuous-flow measurements of d13C and dD of atmospheric CH4 Analytical Chemistry 73, 4104-4110. (doi:10.1021/ac9803434)
  2. Santrock, J., S. A. Studley, and J. M. Hayes. 1985. Isotopic analyses based on the mass spectrum of carbon dioxide Analytical Chemistry 57, 1444-1448. (doi:10.1021/ac00284a060)
  3. Sowers, T., S. Bernard, O. Aballain, J. Chappellaz, J.-M. Barnola, and T. Marik. 2005. Records of the d13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice. Global Biogeochemical Cycles 19, doi:10.1029/2004GB002408. (doi:10.1029/2004GB002408)
Supplemental Docs
Data Files
38.4 kB
66.0 kB

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