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Methane Isotopes in South Pole Firn Air, 2008 Data DOI: https://doi.org/10.7265/N55T3HFP Cite as Sowers, T. A. (2011) "Methane Isotopes in South Pole Firn Air, 2008" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.7265/N55T3HFP. AMD - DIF Record(s) NSIDC-0502_1 Abstract This data set contains depth profiles for delta carbon-13 (&#948;13C) and delta deuterium (&#948;D) of methane (CH<sub>4</sub>) 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 CH<sub>4</sub> 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). Creator(s): Sowers, Todd A. Date Created: 2011-01-01 Repository: USAP-DC (current) - NSIDC (original) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: -180, East: 180, South: -90, North: 90 Temporal Extent(s) Start: 2008-12-01 - End: 2009-01-31 Award(s) NSF 0739491 Version: 1 Related Project(s) Collaborative Research: Methane Isotopes, Hydrocarbons, and other Trace Gases in South Pole Firn Air References 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) 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. (doi:10.1038/383231a0) Keywords Antarctica Atmosphere Chemistry:Fluid Cryosphere Geochemistry Isotope Paleoclimate Snow/Ice South Pole