Special sea ice observations aboard Akademik Fedorov MOSAiC leg 1, 2019-09-25 to 2019-10-20

• Main Authors: Timofeeva, Anna, Smolyanitsky, Vasily M, Bessonov, Vladimir, Petrovskiy, Tomash
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2020
• Subjects: Akademik Fedorov; Arctic Ocean; concentration; form of ice; ice observations; ice thickness; Kara Sea; Laptev Sea; Mosaic; stage of development; Zone; DATE/TIME; LATITUDE; LONGITUDE; Sea ice concentration, total; Sea ice concentration, residual ice; Sea ice concentration, first-year thin ice; Sea ice concentration, grey-white ice; Sea ice concentration, grey ice; Sea ice concentration, nilas; Sea ice concentration, new ice; Sea ice form, residual ice; Sea ice form, first-year thin ice; Sea ice form, grey-white ice; Sea ice form, grey ice; Sea ice form, nilas; Sea ice form, new ice; Ice ridge concentration; Width of the lead, fracture or crack; Snow cover thickness; Snow cover concentration; Ice thickness, concentration, by interval; Comment; Underway cruise track measurements; SIGRID-3 Table 3; AF-MOSAiC-1; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Arctic; Antarctic; Sigrid; Antarc*; Arctic and Antarctic Research Institute; laptev; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.912021; https://doi.pangaea.de/10.1594/PANGAEA.912021

Sea ice observations were routinely conducted by the Arctic and Antarctic Research Institute (AARI) group aboard AARI research vessel "Akademik Fedorov" during MOSAiC leg1 compaign, 25 September - 20 October 2019. Observations were conducted in accordance with AARI methodology. Special feature of the methodology is continuous estimation of sea ice parameters both along the track of navigation “on the route” (within the area around the ship of 2-3 widths of the hull) and “in the region” (within the range of eye visibility), with separation of recording into the zones with homogeneous ice characteristics [Manual on conduction of ice air reconnaissance / Rukovodstvo po proizvodstvu ledovoi aviarazvedki, 1981]. Observations were recorded in a form of an electronic log-book in accordance with the WMO Sea Ice Nomenclature (WMO-No.259) and WMO SIGRID-3 exchange format (SIGRID-3: A vector archive format for Sea Ice Georeferenced Information and Data - JCOMM TR-23, 2014).Column names, where applicable, correspond to SIGRID-3 naming convention for sea ice polygone field names (Tables A-2, B-2, B-3, C-2). Codes for the forms of ice fully correspond to SIGRID-3 "Table 3: Form of ice codes for variable identifiers FA, FB, FC, FP and FS".