Sea ice lead fractions from multiple sensors in the Transpolar Drift during MOSAiC 2019/2020 ...

• Main Authors: von Albedyll, Luisa, Hendricks, Stefan, Hutter, Nils, Murashkin, Dmitrii, Kaleschke, Lars, Willmes, Sascha, Thielke, Linda, Tian-Kunze, Xiangshan
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: leads; Ocean-ice-atmosphere interaction; Open-water fraction; sea ice deformation; File content; CSV text file; CSV text file File Size; CSV text file MD5 Hash; Underway cruise track measurements; PS122/1; PS122/2; PS122/3; PS122/4; PS122/5; Polarstern; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Arctic; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.963736; https://doi.pangaea.de/10.1594/PANGAEA.963736

Divergent sea ice motion breaks the ice and opens fractures and leads. Depending on the air temperature, those open-water areas can quickly refreeze. The open water or thin ice in leads play a crucial role in the heat and gas exchange between the ocean and the atmosphere, impacting atmospheric, ecological, and oceanic processes. Leads can be detected from space, using different types of instruments, e.g., thermal infrared, passive microwave, active microwave, or optical sensors. The retrieval methods have different sensitivities, especially concerning the minimum lead width and the maximum ice thickness, different spatial resolutions, and different limits. We presented a time series of lead fractions from different lead products (Oct 2019 - May 2020) along the drift of the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition in the Transpolar Drift. We compared 7 different lead products based on 1. accumulated divergence derived from SAR images, 2. divergence in linear ...