MicroCT density and specific surface area snowpit profiles during the MOSAiC expedition

• Main Authors: Macfarlane, Amy R, Schneebeli, Martin, Wagner, David N, Dadic, Ruzica, Jaggi, Matthias, Hämmerle, Stefan
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; Comment; DATE/TIME; Event label; Height; relative; from ice/snow line; maximum; minimum; Latitude of event; Location; Longitude of event; Measurement identification; MOSAiC; MOSAiC20192020; MOSAiC expedition; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Office Open XML Workbook; Polarstern; PS122/1; PS122/1_7-87; PS122/2; PS122/2_19-144; PS122/2_19-35; PS122/2_19-92; PS122/2_20-36; PS122/2_20-80; PS122/2_20-83; PS122/2_21-14; PS122/2_21-15; PS122/2_21-52; PS122/2_21-53; PS122/2_21-96; PS122/2_22-5; PS122/2_22-6; PS122/2_22-61; PS122/2_22-73; PS122/2_23-105; PS122/2_23-2; PS122/2_23-34; PS122/2_23-73; PS122/2_23-74; PS122/2_23-9; PS122/2_24-14; PS122/2_24-15; Icebreaker; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.952794; https://doi.org/10.1594/PANGAEA.952794

Cylindrical snow and ice samples of radii 44 mm, 68 mm, 88 mm and a maximum height of 110 mm were taken from the field using a cylindrical drill and transported to the ship in an insulated container. We scanned the samples within 24 hours using a desktop cone-beam microCT90 set-up in a -15 degreeC cold laboratory. A global threshold of 0.21 was used throughout the analysis. This dataset provides complete analysis output, which includes profiles of density, specific surface area (SSA), anisotropy, event date, y position in the sample (where 0 mm represents the bottom of the sample), y position in the snowpit (where 0 mm represents the sea-ice surface) and relative_depth (where 1 represents the top of the snowpack and 0 represents the sea ice interface) listed in the final columns of the excel files.