Entry_ID: NSIDC-0310
Entry_Title: Carbon-13 Isotopic Composition of Atmospheric Methane in Firn Air, South Pole and Siple Dome, Antarctica
Group: Data_Set_Citation
   Dataset_Creator: Todd Sowers
   Dataset_Title: Carbon-13 Isotopic Composition of Atmospheric Methane in Firn Air, South Pole and Siple Dome, Antarctica
   Dataset_Release_Date: 2007-07-09
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0310.html
   Dataset DOI: http://dx.doi.org/10.7265/N5ST7MR2
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Todd
   Middle_Name: A.
   Last_Name: Sowers
   Email: tas11@psu.edu
   Phone: 1 814 865-1921 
   Group: Contact_Address
      Address: Penn State University
      Address: Earth and Environment Science Institute
      Address: 317b Earth and Engineering Science Building
      City: University Park
      Province_or_State: PA
      Postal_Code: 16802
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Paleoclimate
   Term: Ice Core Records
   Variable_Level_1: Isotopes
   Detailed_Variable: Carbon-13 of Methane
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: AGDC
Keyword: Antarctica
Keyword: Antarctic Ice Sheet
Keyword: Carbon
Keyword: Firn Air Isotope Measurements
Keyword: Firn Air Isotopes
Keyword: Firn Isotopes
Keyword: Gas Isotopes
Keyword: Ice Core
Keyword: Ice Core Chemistry
Keyword: Ice Core Data
Keyword: Methane
Keyword: Paleoclimate
Keyword: Siple Dome
Keyword: Stable Isotopes
Sensor_Name: MASS SPECTROMETERS
Source_Name: LABORATORY
Group: Temporal_Coverage
   Start_Date: 1995-01-01
   Stop_Date: 1995-01-31
End_Group
Group: Temporal_Coverage
   Start_Date: 2001-01-01
   Stop_Date: 2001-01-31
End_Group
Group: Paleo_Temporal_Coverage
   Paleo_Start_Date: 1820
   Paleo_Stop_Date: 2001
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: -81.403
   Northernmost_Latitude: -81.403
   Westernmost_Longitude: -148.3023
   Easternmost_Longitude: -148.3023
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: ANTARCTICA
   Detailed_Location: SOUTH POLE AND SIPLE DOME
End_Group
Quality: Refer to Sowers et al. (2005) for quality assessment information.
Data_Set_Language: English
Originating_Center: AGDC
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: AGDC > Antarctic Glaciological Data Center
   Data_Center_URL: http://nsidc.org/agdc/
   Group: Personnel
      Role: Data Center Contact
      First_Name: AGDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 x
      Fax: 1 303  492-2468 x
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Format: Microsoft Excel
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Format: Microsoft Word
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 37.5 KB
End_Group
Group: Reference

   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.

   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.

   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.

End_Group
Group: Summary

   This data set includes records of the delta carbon-13 (δ13C) 
   of methane (CH4) 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.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0290.html
   Group: Description

      Firn Air Inert Gas and Oxygen Observations from Siple Dome, 1996, and the 
      South Pole, 2001

   End_Group
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0098.html
   Description: Firn Air Isotope and Temperature Measurements from Siple Dome and South Pole
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0123.html
   Description: Siple Dome Core Date from Measurement of the d18O of Paleoatmospheric O2
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0134.html
   Description: Siple Dome Highlights: Stable isotopes
End_Group
IDN_Node: AMD/US
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2007-07-09
Last_DIF_Revision_Date: 2013-03-18
DIF_Revision_History: Added DOI