Stable water isotopes of sea ice at Main Coring Site (MCS) during MOSAiC expedition ...

• Main Authors: Mellat, Moein, Meyer, Hanno, Werner, Martin, Brunello, Camilla F, Granskog, Mats A, Damm, Ellen, Bauch, Dorothea, Weiner, Mikaela, Marent, Andreas
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Mosaic; Sea ice; Event label; Sample code/label; Station label; Sample ID; DATE/TIME; Sample type; DEPTH, ice/snow; Salinity; δ18O, water; δ Deuterium, water; Deuterium excess; Ice corer; Mass spectrometer Finnigan MAT Delta-S ISOLAB; Calculated after Dansgaard 1964; PS122/1; PS122/2; PS122/3; Polarstern; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.958466; https://doi.pangaea.de/10.1594/PANGAEA.958466

Sea ice cores were collected from the Biogeochemistry (BGC) team at different stations located on the main ice floe of MOSAiC expedition. Flat sea ice on the floe was categorized into three types based on the age: sea ice which grew during the same winter referred to as First-Year-Ice (FYI); sea ice which had survived one or more summer melting periods referred to as Second-Year-Ice (SYI). Sea ice cores were collected using a Kovacs Mark II 9 cm diameter corer. The core was extracted and placed in an aluminum holder equipped with a metric ruler. Using a standard Kovacs ice thickness gauge, the freeboard was taken and the length of the core was measured. The snow on top of the sea ice was brushed off the top of the cores to minimize the snow affecting the ice surface. Onboard RV Polarstern, the cores were cut in 10 cm sections using a handsaw at 4° C (leg 1) or an electric saw at -20° C (legs 2 and 3). Each section was transferred into a gas-tight TedlarTM bag. The closed bags were carefully degassed with a ...