Stable oxygen isotope profile of the NGRIP_2012 firn core, annual means ...

• Main Authors: Freitag, Johannes, Kipfstuhl, Sepp, Weißbach, Stefanie, Karlsson, Nanna Bjørnholt, Münch, Thomas, Hörhold, Maria
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: density; firn core; North Greenland Traverse; AGE; Age; δ18O, water; Firn corer; Calculated, annual mean; GL-Land_2012_NEEM12_NGT12; AWI Arctic Land Expedition; Glaciology @ AWI AWI_Glac; North Greenland Eemian Ice Drilling NEEM; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Greenland; North Greenland
• Online Access: https://dx.doi.org/10.1594/pangaea.931706; https://doi.pangaea.de/10.1594/PANGAEA.931706

Stable oxygen isotopes (δ18O) were measured on discrete samples using Cavity Ring-Down spectroscopy with an L2120-i and L2130-i by Picarro Instruments. The δ18O concentration with depth is provided with a precision of better than 0.1 per mil. 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. ...