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: MOSAiC expedition; Event label; DATE/TIME; Latitude of event; Longitude of event; Office Open XML Workbook; Sample code/label; Sample number; Measurement identification; Location; Height, relative, from ice/snow line, maximum; Height, relative, from ice/snow line, minimum; Comment; Snow pit; PS122/1; PS122/2; PS122/3; PS122/4; PS122/5; Polarstern; Arctic Research Icebreaker Consortium A strategy for meeting the needs for marine-based research in the Arctic ARICE; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Icebreaker; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.952794; https://doi.pangaea.de/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. ... : The AIM files for this dataset are available on request ([e-mail]), the ISQ files can be downloaded from the MCS portal (https://mosaic-portal.org/data/open-mcs/vessel/polarstern/sn_microct/sn_microct/). ...