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PANGAEA.
Data Publisher for Earth & Environmental Science

Bock, Michael; Schmitt, Jochen; Beck, Jonas; Seth, Barbara; Chappellaz, Jérôme A; Fischer, Hubertus (2017): Stable isotopic methane (δ¹³CH4) records of ice core TALDICE. PANGAEA, https://doi.org/10.1594/PANGAEA.873914, In supplement to: Bock, M et al. (2017): Glacial/interglacial wetland, biomass burning, and geologic methane emissions constrained by dual stable isotopic CH4 ice core records. Proceedings of the National Academy of Sciences, 201613883, https://doi.org/10.1073/pnas.1613883114

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Coverage:
Latitude: -72.783330 * Longitude: 159.066670
Date/Time Start: 2005-01-01T00:00:00 * Date/Time End: 2008-12-31T00:00:00
Minimum DEPTH, ice/snow: 132.06 m * Maximum DEPTH, ice/snow: 1437.65 m
Event(s):
TALDICE (Talos Dome) * Latitude: -72.783330 * Longitude: 159.066670 * Date/Time Start: 2005-01-01T00:00:00 * Date/Time End: 2008-12-31T00:00:00 * Elevation: 2315.0 m * Recovery: 89 m * Location: Antarctica * Method/Device: Electromechanical drill (EMD)
Comment:
d13CH4 data are measured using the system described in:
Schmitt, J., B. Seth, M. Bock, H. Fischer, "Online technique for isotope and mixing ratios of CH4, N2O, Xe and mixing ratios of organic trace gases on a single ice core sample", Atmospheric Measurement Techniques, 7/8, 2645-2665, 2014, doi:10.5194/amt-7-2645-2014
All data are free of krypton interference during the mass spectrometric analysis. For details see:
Schmitt, J., B. Seth, M. Bock, C. van der Veen, L. Möller, C. J. Sapart, M. Prokopiou, T. Sowers, T. Röckmann, H. Fischer, "On the interference of Kr during carbon isotope analysis of methane using continuous-flow combustion-isotope ratio mass spectrometry", Atmospheric Measurement Techniques, 6/1, 1425-1445, 2013, doi:10.5194/amt-6-1425-2013
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, ice/snowDepth ice/snowmBock, MichaelGeocode
2Gas ageGas ageka BPBock, MichaelAICC2012, BP = 1950
3Methane mixing ratioCH4 mix rationmol/molBock, MichaelDetermined according to Schmitt et al. (2014)measured
4Methane mixing ratio, standard deviationCH4 mix ratio std dev±Bock, MichaelDetermined according to Schmitt et al. (2014)Methane mixing ratio error (1-sigma standard deviation of ice core replicates in nmol/mol)
5δ13C, methaneδ13C CH4‰ PDBBock, MichaelDetermined according to Schmitt et al. (2014)measured, with respect to Vienna Pee Dee Belemnite (VPDB)
6δ13C, methane, standard deviationδ13C CH4 std dev±Bock, MichaelDetermined according to Schmitt et al. (2014)d13CH4 error (1-sigma standard deviation of ice core replicates in per mil with respect to Vienna Pee Dee Belemnite (VPDB))
7Gravitational settlingGrav settBock, Michaelsee Bock et al. (2017)see supporting information of Bock et al. (2017)
8δ13C, methaneδ13C CH4‰ PDBBock, Michaelsee Bock et al. (2017)corrected for gravitational settling in the firn, with respect to Vienna Pee Dee Belemnite (VPDB)
9Diffusive fractionationDiff fracBock, Michaelsee Bock et al. (2017)see supporting information of Bock et al. (2017)
10δ13C, methaneδ13C CH4‰ PDBBock, Michaelsee Bock et al. (2017)corrected for gravitational settling and diffusional fractionation in the firn, with respect to Vienna Pee Dee Belemnite (VPDB)
Size:
1530 data points

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