Snow height on sea ice, meteorological conditions and drift of sea ice from autonomous measurements from buoy 2020S99, deployed during MOSAiC 2019/20

• Main Authors: Nicolaus, Marcel, Jutila, Arttu, Raphael, Ian, Hoppmann, Mario
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: 2020S99; Arctic Ocean; autonomous platform; AWI_SeaIce; buoy; BUOY_SNOW; Current sea ice maps for Arctic and Antarctic; DATE/TIME; drift; Global positioning system; time since last fix; LATITUDE; LONGITUDE; meereisportal.de; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Polarstern; Pressure; atmospheric; PS122/2; PS122/2_14-335; PS122/4; PS122/4_43-169; Quality flag; air temperature; atmospheric pressure; position; snow height; technical temperature; Sea Ice Physics @ AWI; Snow buoy; snow depth; Temperature; air; technical; Antarctic; Arctic; Antarc*; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.936227; https://doi.org/10.1594/PANGAEA.936227

Snow height was measured by the Snow Buoy 2020S99, an autonomous platform, installed on drifting sea ice in the Arctic Ocean during MOSAiC (Leg 2) 2019/20. The resulting time series describes the evolution of snow height as a function of place and time between 10 February 2020 and 06 August 2020 in sample intervals of 1 hour. The Snow Buoy consists of four independent acoustic range finder measurements representing the area (approx. 10 m**2) around the buoy. In addition to snow height, geographic position (GPS), barometric pressure, air temperature, and surface temperature were measured. Negative values of snow height occur if surface ablation continues into the sea ice. Thus, these measurements describe the position of the sea ice surface relative to the original snow-ice interface. Differences between single sensors indicate small-scale variability of the snow pack around the buoy.