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: Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; Date/Time of event; Event label; Image; Image (File Size); Latitude of event; Longitude of event; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Olympus Tough TG-5 Camera; Polarstern; Position; PS122/1; PS122/1_6-6; PS122/1_7-12; PS122/1_7-88; PS122/2; PS122/2_16-62; PS122/2_16-9; PS122/2_17-109; PS122/2_17-16; PS122/2_17-49; PS122/2_18-17; PS122/2_18-56; PS122/2_18-66; PS122/2_18-8; PS122/2_19-144; PS122/2_19-28; PS122/2_19-35; PS122/2_19-9; PS122/2_19-92; PS122/2_20-4; PS122/2_20-80; PS122/2_20-83; 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_23-2; PS122/2_23-34; PS122/2_23-73; PS122/2_23-74; PS122/2_23-9; PS122/2_24-14; Arctic; Olympus; polar night
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.935932; https://doi.org/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 ice surface using a brush. Please direct inquiries to; David Wagner (PS122/1), Martin Schneebeli (PS122/2), Amy Macfarlane (PS122/3 and PS122/4), Ruzica Dadic (PS122/5).