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Vinther, Bo Møllesøe; Freitag, Johannes; Kipfstuhl, Sepp; Weißbach, Stefanie; Karlsson, Nanna Bjørnholt; Münch, Thomas; Hörhold, Maria (2022): Extension of the stable oxygen isotope and density profile of the B26 ice core [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.945670

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Published: 2022-06-27 • DOI registered: 2022-07-27

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Abstract:
The firn core array of the North Greenland Traverse (NGT) provides unique climatic information for North Greenland until the mid 1990ies. In order to extend this climate record into more recent time, some of the drill sites were revisited and extension cores were drilled. The record is a composite of snow liners (from the surface to 1.29 m depth) and a consecutive firn core from 1.47 m depth to 30.00 m depth with a diameter of 75 cm. Density was measured by weighing the 55 cm long bags. Stable oxygen isotopes (δ18O) were measured at the Niels Bohr Institute, Copenhagen, Denmark. Using raw, un-calibrated dielectrical profiling (DEP) data from the field (NEEM Set-up), volcanic tie points were derived. Together with the smoothed density data and the isotopic composition the record was dated by layer counting. The annual mean values of δ18O were obtained based on this dating. Based on the density measurements and the dating, the annual accumulation rate in water equivalent depth was derived.
Keyword(s):
density; firn core; North Greenland Traverse; stable water isotopes
Supplement to:
Buchardt, Susanne L; Clausen, Henrik Brink; Vinther, Bo Møllesøe; Dahl-Jensen, Dorthe (2012): Investigating the past and recent δ18O-accumulation relationship seen in Greenland ice cores. Climate of the Past, 8(6), 2053-2059, https://doi.org/10.5194/cp-8-2053-2012
Hörhold, Maria; Münch, Thomas; Weißbach, Stefanie; Kipfstuhl, Sepp; Freitag, Johannes; Sasgen, Ingo; Lohmann, Gerrit; Vinther, Bo Møllesøe; Laepple, Thomas (2023): Modern temperatures in central–north Greenland warmest in past millennium. Nature, 613(7944), 503-507, https://doi.org/10.1038/s41586-022-05517-z
Related to:
Freitag, Johannes; Kipfstuhl, Sepp; Weißbach, Stefanie; Karlsson, Nanna Bjørnholt; Münch, Thomas; Hörhold, Maria (2021): Extension of the stable oxygen isotope and density profile of the NGRIP ice core [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.931746
Freitag, Johannes; Kipfstuhl, Sepp; Weißbach, Stefanie; Karlsson, Nanna Bjørnholt; Münch, Thomas; Hörhold, Maria (2021): Extension of the stable oxygen isotope and density profile of the ngt14C93.2 (B18) firn core [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.931740
Freitag, Johannes; Kipfstuhl, Sepp; Weißbach, Stefanie; Karlsson, Nanna Bjørnholt; Münch, Thomas; Hörhold, Maria (2021): Extension of the stable oxygen isotope and density profile of the ngt27C94.2 (B21) firn core [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.931744
Freitag, Johannes; Kipfstuhl, Sepp; Weißbach, Stefanie; Karlsson, Nanna Bjørnholt; Münch, Thomas; Hörhold, Maria (2021): Extension of the stable oxygen isotope and density profile of the ngt33C94.2 (B23) firn core [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.931745
Project(s):
Glaciology @ AWI (AWI_Glac)
North Greenland Eemian Ice Drilling (NEEM)
Polar Terrestrial Environmental Systems @ AWI (AWI_Envi)
Funding:
Agence Nationale de la Recherche (ANR), grant/award no. 07-VULN-09-001: North Greenland Eemian Ice Drilling
Coverage:
Latitude: 77.253300 * Longitude: -49.216700
Date/Time Start: 2011-05-01T00:00:00 * Date/Time End: 2011-08-31T00:00:00
Event(s):
B26_2011 * Latitude: 77.253300 * Longitude: -49.216700 * Date/Time Start: 2011-05-01T00:00:00 * Date/Time End: 2011-08-31T00:00:00 * Location: Greenland * Method/Device: Firn corer (FIRNC)
Comment:
This data set belongs to the data sets of firn cores B18_2012, B21_2012, B23_2012 and NGRIP_2012.
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
4 datasets

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Datasets listed in this bundled publication

  1. Vinther, BM; Freitag, J; Kipfstuhl, S et al. (2022): Accumulation rate of the B26_2011 firn core. https://doi.org/10.1594/PANGAEA.945666
  2. Vinther, BM; Freitag, J; Kipfstuhl, S et al. (2022): Stable water isotopic concentration profile of the B26_2011 firn core, annual means. https://doi.org/10.1594/PANGAEA.945667
  3. Vinther, BM; Freitag, J; Kipfstuhl, S et al. (2022): Depth-Age relationship of the B26_2011 firn core. https://doi.org/10.1594/PANGAEA.945668
  4. Vinther, BM; Freitag, J; Kipfstuhl, S et al. (2022): Stable water isotopic concentration profile of the B26_2011 firn core. https://doi.org/10.1594/PANGAEA.945669