Snowpit multi-image photogrammetry images collected during the MOSAiC expedition ...

• Main Authors: Macfarlane, Amy R, Schneebeli, Martin, Dadic, Ruzica, Wagner, David N, Arndt, Stefanie, Clemens-Sewall, David, Hämmerle, Stefan, Hannula, Henna-Reetta, Jaggi, Matthias, Kolabutin, Nikolai, Krampe, Daniela, Lehning, Michael, Matero, Ilkka, Nicolaus, Marcel, Oggier, Marc, Pirazzini, Roberta, Polashenski, Chris, Raphael, Ian, Regnery, Julia, Shimanchuck, Egor, Smith, Madison M, Tavri, Aikaterini
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; Position; Image; Image File Size; Snow pit; Olympus Tough TG-5 Camera; 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; Arctic; polar night
• Online Access: https://dx.doi.org/10.1594/pangaea.935932; https://doi.pangaea.de/10.1594/PANGAEA.935932

The small-scale surface roughness is important for scattering of shortwave visible and higher-frequency microwave radiation. A standard digital camera (Olympus tough TG-5) and a set of reference targets were used to take sets of images that can be processed using multi-image photogrammetry into high-resolution small-scale digital elevation models (DEMs). The DEMs can be used to estimate roughness of the snow surface and of the snow-ice interface. The reference targets were distributed around a small ( ~ 0.6 m x 0.6 m) area, and pictures were taken from different angles, including all targets in each image, and ideally overlapping by at least 80%. Pictures were always taken with the maximum wide-angle of the camera. During polar night, a headlamp was taken to illuminate the scene before pictures were taken. Image sets of the surface were taken before the snowpit was excavated. Image sets of the snow-ice interface were taken after the detailed snowpit measurements, and the remaining snow was brushed off the ...