Snow stable water isotopes of a surface transect at the EastGRIP deep drilling site, summer season 2017, 7 cm ...

• Main Authors: Behrens, Melanie, Hörhold, Maria, Hoffmann, Andrew, Faber, Anne-Katrine, Kahle, Emma, Freitag, Johannes, Madsen, Martin V, Kipfstuhl, Sepp, Steen-Larsen, Hans Christian
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: EastGRIP; snow-air exchange; stable water isotopes; surface transect; DATE/TIME; Depth, ice/snow, top/minimum; Depth, ice/snow, bottom/maximum; DEPTH, ice/snow; δ18O, water; δ Deuterium, water; Ice drill; Cavity ring-down spectroscopy CRDS, isotopic water analyzer L2120-i, L2130-i, Picarro Inc.; East Greenland Ice-core Project EGRIP; Signals from the Surface Snow Post-Depositional Processes Controlling the Ice Core Isotopic Fingerprint SNOWISO; Greenland; East Greenland; East Greenland Ice-core Project; Greenland ice core; Greenland Ice core Project; ice core
• Online Access: https://dx.doi.org/10.1594/pangaea.957438; https://doi.pangaea.de/10.1594/PANGAEA.957438

Snow samples were taken on a daily basis along a 100 m wind-parallel transect at the EastGRIP ice core deep drilling site. The snow was collected at 11 positions with 10 m spacing in 2 depth intervals. The depth intervals are top 1 cm and top 7 cm. In addition, cumulative samples were taken from the top 1 cm depth interval. Each day, undisturbed snow was sampled and the exact sample location was marked to avoid sampling disturbed snow during the next sampling event. The samples were shipped frozen to the Alfred-Wegener-Institut and stored at -25°C. Before measurements, the samples were melted in the sample bags at room temperature. For the measurement of the isotopic composition, the instruments Picarro L2120-i and Picarro L2130-i were used. The measurement set-up followed the Van-Geldern protocol (Van Geldern and Barth, 2012). Each sample was injected 4 times. As a measure of accuracy, we calculated the combined standard uncertainty (Magnusson et al., 2017) including the long-term reproducibility and bias ...