NSIDC-0502 Methane Isotopes in South Pole Firn Air, 2008 Sowers, T Methane Isotopes in South Pole Firn Air, 2008 2011-01-01 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0502.html http://dx.doi.org/10.7265/N55T3HFP Investigator Todd A. Sowers tas11@psu.edu 1 814 865-1921
Penn State University
Earth and Environment Science Institute
317b Earth and Engineering Science Building
University Park PA 16802 USA Technical Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 x 1 303 492-2468 x
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA EARTH SCIENCE Cryosphere Snow/Ice Snow Depth Meters Below Surface EARTH SCIENCE Paleoclimate Ice Core Records Isotopes Delta Carbon-13 of Methane EARTH SCIENCE Paleoclimate Ice Core Records Isotopes Delta Deuterium of Methane Climatology/Meteorology/Atmosphere AGDC Antarctica Carbon CARBON-13 CARBON ISOTOPES delta 13C deltaD delta deuterium Deuterium Firn firn air firn air chemistry Firn Air Isotope Measurements Firn Air Isotopes firn air samples Gas Isotopes ISOTOPES Methane methane isotopes Polar Firn Air Stable Isotopes MASS SPECTROMETERS GROUND-BASED OBSERVATIONS LABORATORY 2008-12-01 2009-01-31 1900 2009 complete 0 meters 117.57 meters CONTINENT ANTARCTICA SOUTH POLE The investigator analyzed 156 firn air samples from the 2008-2009 field season and 44 standards for &#948;13C and &#948;D of CH<sub>4</sub>. The average standard deviation of replicate samples at each of the 18 depths was ±0.13‰ and ±4.2‰ for &#948;13C and &#948;D, respectively. English NSIDC_AGDC NSIDC National Snow and Ice Data Center http://nsidc.org Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA NSIDC_AGDC NSIDC Antarctic Glaciological Data Center http://nsidc.org/agdc/ Data Center Contact NSIDC AGDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA FTP 1 KB ASCII Text FTP 51 KB Microsoft Excel 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. 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). CEOS IDN DIF 9.7 2011-01-01 2013-03-20 Added DOI