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

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). […]

北极与南极研究所（AARI）研究团队在“阿卡迪克·费多罗夫”号研究船上进行了一系列的常规海冰观测，该观测活动于2019年9月25日至10月20日的MOSAiC Leg1活动中实施。观测工作严格遵循AARI的方法论。该方法论的独特之处在于对海冰参数的持续评估，既包括航行轨迹“航线”上的参数（在船体周围2-3倍船宽的区域）也包括“区域”内的参数（在目视范围内），并将记录分为具有均一冰特性的区域[《冰空侦察实施手册》/《Rukovodstvo po proizvodstvu ledovoi aviarazvedki》，1981]。观测数据以电子日志簿的形式记录，并遵循世界气象组织（WMO）的海冰命名法（WMO-No.259）以及WMO SIGRID-3交换格式（SIGRID-3：海冰地理参照信息和数据矢量归档格式 - JCOMM TR-23，2014）。