NSIDC-0502Methane Isotopes in South Pole Firn Air, 2008Sowers, T. A.Methane Isotopes in South Pole Firn Air, 20082011-01-01Boulder, Colorado USANSIDC: National Snow and Ice Data Center1false10.7265/N55T3HFPhttps://doi.org/10.7265/N55T3HFPNSIDC-0502InvestigatorToddA.Sowerstas11@psu.edu1-814-865-1921317b Earth and Engineering Science BuildingUniversity ParkPA16802USATechnical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCEPaleoclimateIce Core RecordsIsotopes Delta Carbon-13 of MethaneEARTH SCIENCEPaleoclimateIce Core RecordsIsotopes Delta Deuterium of MethaneEARTH SCIENCECryosphereSnow/IceSnow Depth Meters Below SurfaceClimatology/Meteorology/AtmosphereAGDCAGDC-projectAntarcticaCarbonCARBON-13CARBON ISOTOPESdelta 13CdeltaDdelta deuteriumDeuteriumFirnfirn airfirn air chemistryFirn Air Isotope MeasurementsFirn Air Isotopesfirn air samplesGas IsotopesISOTOPESMethanemethane isotopesPolar Firn AirStable IsotopesMASS SPECTROMETERSGROUND-BASED OBSERVATIONSGROUND-BASED OBSERVATIONSLABORATORYLABORATORY2008-12-012009-01-3119002009complete-9090-180180ContinentAntarcticaSouth PoleThe investigator analyzed 156 firn air samples from the 2008-2009 field season and 44 standards for δ13C and δD 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 δ13C and δD, respectively.EnglishAGDCFTP1 KBASCIIFTP51 KBExcelBattle, 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 (δ13C) and delta deuterium (δD) 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).VIEW RELATED INFORMATIONhttps://doi.org/10.7265/N55T3HFPDocumentationGET DATAhttp://www.usap-dc.org/view/dataset/609502Get External DataCEOS IDN DIFVERSION 9.92011-01-012023-05-23NSIDCVersion SummaryNSIDCMinor VersionNSIDCCurrent Version1NSIDCFull Dataset CitationSowers, T. A. 2011. <i>Methane Isotopes in South Pole Firn Air, 2008.</i> [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. <a href="https://doi.org/10.7265/N55T3HFP">https://doi.org/10.7265/N55T3HFP</a>. [Date Accessed].NSIDCRetiredfalse