Entry_ID: NSIDC-0502
Entry_Title: Methane Isotopes in South Pole Firn Air, 2008
Group: Data_Set_Citation
Dataset_Creator: Sowers, T
Dataset_Title: Methane Isotopes in South Pole Firn Air, 2008
Dataset_Release_Date: 2011-01-01
Dataset_Release_Place: Boulder, Colorado USA
Dataset_Publisher: NSIDC: National Snow and Ice Data Center
Online_Resource: http://nsidc.org/data/nsidc-0502.html
Dataset DOI: http://dx.doi.org/10.7265/N55T3HFP
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: Cryosphere
Term: Snow/Ice
Variable_Level_1: Snow Depth
Detailed_Variable: Meters Below Surface
End_Group
Group: Parameters
Category: EARTH SCIENCE
Topic: Paleoclimate
Term: Ice Core Records
Variable_Level_1: Isotopes
Detailed_Variable: Delta Carbon-13 of Methane
End_Group
Group: Parameters
Category: EARTH SCIENCE
Topic: Paleoclimate
Term: Ice Core Records
Variable_Level_1: Isotopes
Detailed_Variable: Delta Deuterium of Methane
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: AGDC
Keyword: Antarctica
Keyword: Carbon
Keyword: CARBON-13
Keyword: CARBON ISOTOPES
Keyword: delta 13C
Keyword: deltaD
Keyword: delta deuterium
Keyword: Deuterium
Keyword: Firn
Keyword: firn air
Keyword: firn air chemistry
Keyword: Firn Air Isotope Measurements
Keyword: Firn Air Isotopes
Keyword: firn air samples
Keyword: Gas Isotopes
Keyword: ISOTOPES
Keyword: Methane
Keyword: methane isotopes
Keyword: Polar Firn Air
Keyword: Stable Isotopes
Sensor_Name: MASS SPECTROMETERS
Source_Name: GROUND-BASED OBSERVATIONS
Source_Name: LABORATORY
Group: Temporal_Coverage
Start_Date: 2008-12-01
Stop_Date: 2009-01-31
End_Group
Group: Paleo_Temporal_Coverage
Paleo_Start_Date: 1900
Paleo_Stop_Date: 2009
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
Minimum_Depth: 0 meters
Maximum_Depth: 117.57 meters
End_Group
Group: Location
Location_Category: CONTINENT
Location_Type: ANTARCTICA
Detailed_Location: SOUTH POLE
End_Group
Group: Quality
The investigator analyzed 156 firn air samples from the 2008-2009 field season
and 44 standards for δ13C and δD of CH4. The average
standard deviation of replicate samples at each of the 18 depths was ±0.13
and ±4.2 for δ13C and δD, respectively.
End_Group
Data_Set_Language: English
Originating_Center: NSIDC_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: NSIDC_AGDC > NSIDC Antarctic Glaciological Data Center
Data_Center_URL: http://nsidc.org/agdc/
Group: Personnel
Role: Data Center Contact
First_Name: NSIDC AGDC
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: Distribution
Distribution_Media: FTP
Distribution_Size: 1 KB
Distribution_Format: ASCII Text
End_Group
Group: Distribution
Distribution_Media: FTP
Distribution_Size: 51 KB
Distribution_Format: Microsoft Excel
End_Group
Group: Reference
Battle, M. et al. 1996. Atmospheric Gas Concentrations over the Past Century
Measured in Air from Firn at the South Pole. Nature 383, 231-235.
Sowers, T., S. Bernard, O. Aballain, J. Chappellaz, J.M. Barnola, and T.
Marik. 2005. Records of the delta 13C 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 contains depth profiles for delta carbon-13 (δ13C) and
delta deuterium (δD) of methane (CH4) in South Pole firn air.
The investigators obtained air samples from two boreholes during December 2008
and January 2009, and subsequently determined isotope ratios at 18 depths. The
profiles represent a roughly 100-year history of the isotopic composition of
CH4 at South Pole Station (no depth-age model provided).
Data are available via FTP as an ASCII text file (.txt) and a Microsoft Excel
file (.xlsx).
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2011-01-01
Last_DIF_Revision_Date: 2013-03-20
DIF_Revision_History: Added DOI