Methane Isotopes from the WAIS Divide Ice Core  View Catalog Page Entry ID
NSIDC-0435
Summary
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 Coordinates:
N: -79.47°
S: -79.47°
E: 112.09°
W: 112.09°
Min Altitude: 1766 meters
Max Altitude: 1766 meters
Max Depth: 300 meters
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Data Set Citation
Dataset Creator: Sowers, Todd
Dataset Title: Methane Isotopes from the WAIS Divide Ice Core
Dataset Release Date: 2009-12-01
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0435.html
Dataset DOI: http://dx.doi.org/10.7265/N5J67DW0
Temporal Coverage
Start Date: 2008-01-01
Stop Date: 2008-12-30
Paleo Temporal Coverage
Paleo Start Date: 1000 ybp
Paleo Stop Date: present
Chronostratigraphic Unit: Phanerozoic Cenozoic Cenozoic
Data Resolution
Vertical Resolution: 0.1 meters
Temporal Resolution: 5 years
Location Keywords
- CONTINENT ANTARCTICA
- GEOGRAPHIC REGION POLAR
Science Keywords
- Cryosphere Glaciers/Ice Sheets Ice Sheets
- Cryosphere Snow/Ice Snow/Ice Chemistry
- Paleoclimate Ice Core Records Isotopes
- Paleoclimate Ice Core Records Methane
- Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry
Ancillary Keywords
- Firn Air Isotopes
- Ice Sheet
- West Antarctic Ice Sheet
- Climatology/Meteorology/Atmosphere
Platform
- FIELD INVESTIGATION
- FIELD SURVEYS
- LABORATORY
Instrument
- MASS SPECTROMETERS
- SPECTROMETERS
Data Set Progress
complete
Originating Center
NSIDC_AGDC
Data Center
National Snow and Ice Data Center
Data Center URL: http://nsidc.org
Data Center Personnel
Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
NSIDC Antarctic Glaciological Data Center
Data Center URL: http://nsidc.org/agdc/
Data Center Personnel
Name: NSIDC AGDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Distribution
Distribution Media: FTP
Distribution Size: 32 KB
Distribution Format: Microsoft Excel
Personnel
Todd A. Sowers
Role: INVESTIGATOR
Phone: 1 814 865-1921
Email: tas11@psu.edu
Contact Address:
- Penn State University
- Earth and Environment Science Institute
- 317b Earth and Engineering Science Building
City: University Park
Province or State: PA
Postal Code: 16802
Country: USA
NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Related URL
VIEW PROJECT HOME PAGE
View Project Home Page
Reference
Mischler, J. A., T. A. Sowers, R. B. Alley, M. Battle, J. R. McConnell, L. Mitchell, T. Popp, E. Sofen, and M. K. Spencer. 2009. Carbon and hydrogen isotopic composition of methane over the last 1000 years, Global Biogeochem. Cycles, 23, GB4024, doi:10.1029/2009GB003460.
Sowers, T. 2006. Late Quaternary atmospheric CH4 isotope record suggests marine clathrates are stable. Science 311: 838-841.
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 two centuries as recorded in Antarctic snow and ice. Global Biogeochemical Cycles 19(GB2002).
Sowers, T. A. 2009. Atmospheric methane isotope records covering the Holocene period. Quaternary Science Reviews doi:10.1016/j.quascirev.2009.05.023.
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 2009-12-01
Last DIF Revision Date: 2013-03-20
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