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Data Set ID:
NSIDC-0435

Methane Isotopes from the WAIS Divide Ice Core, Version 1

This data set includes methane (CH4) isotope data from the West Antarctic Ice Sheet (WAIS) Divide ice core, WDC05A, in Antarctica. The data include depth, gas age, and the isotopic composition of methane (∂13C and ∂D of CH4). The ice core was collected during the 2005-2006 Antarctic field season. The CH4 isotope data was generated in 2008 using wet extraction methodology. Samples span the last 1,000 years, at a resolution of about 15 years. Data for samples above 69 meters were from firn air, and data below 69 meters from ice. The dating of the ice was based on continuous chemical analyses above 69 meters and Electrical Conductivity/Dielectric Property (ECM/DEP) measurements from ice. Dating uncertainty is estimated to be better than five years.

Data are available via FTP in Microsoft Excel (.xls) tab delimited format

Geographic Coverage

Spatial Coverage:
  • N: -79.47, S: -79.47, E: 112.09, W: 112.09

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 January 2008 to 30 December 2008
Temporal Resolution: 60 month
Parameter(s):
  • Glaciers/Ice Sheets > Ice Sheets
  • Ice Core Records > Isotopes
  • Ice Core Records > Methane
  • Snow/Ice > Snow/Ice Chemistry
Platform(s) FIELD INVESTIGATION, FIELD SURVEYS, LABORATORY
Sensor(s): MASS SPECTROMETERS, SPECTROMETERS
Data Format(s):
  • Microsoft Excel
Version: V1
Data Contributor(s): Todd Sowers

Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Sowers, T. A. 2009. Methane Isotopes from the WAIS Divide Ice Core, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: http://dx.doi.org/10.7265/N5J67DW0. [Date Accessed].