Results of regional scale sea ice and snow thickness surveys during Nansen Legacy/Synoptic Arctic Survey Joint Cruise 2 (JC2-2) in August – September 2021 using helicopter-borne electromagnetic induction sounding instrument (EM-bird)

The Nansen Legacy/Synoptic Arctic Survey Joint Cruise 2 (JC2-2) was part of the seasonal investigation of the northern Barents Sea and adjacent Arctic Basin. The multidisciplinary cruise was conducted in Aug 24 – Sep 25 of 2021 onboard R/V Kronprins Haakon, and focused on studying the physical, chemical and biological conditions in ocean, atmosphere and sea ice. While in sea ice, we conducted ten regional scale sea ice helicopter-borne surveys of ice conditions using a helicopter-borne electromagnetic instrument (HEM) EM-bird. This dataset presents processed EM-bird data on total snow and sea-ice thickness along the flight tracks. This is a contribution to the Research Council of Norway project "Nansen Legacy" (https://arvenetternansen.com/), WP RF-1 "Physical drivers".

南森遗产/北极综合调查联合航次2（JC2-2）是巴伦支海北部及毗邻北极盆地季节性调查的组成部分。本次多学科科考航次于2021年8月24日至9月25日在“海康王后号”科考船（R/V Kronprins Haakon）上开展，重点研究海洋、大气与海冰中的物理、化学及生物环境状态。在海冰作业期间，研究团队使用直升机搭载式电磁仪器（helicopter-borne electromagnetic instrument，HEM）EM-bird，完成了10次区域尺度海冰状况直升机载勘测。本数据集包含沿飞行轨迹采集并经处理的总积雪厚度与海冰厚度相关EM-bird实测数据。本数据集是挪威研究理事会（Research Council of Norway）“南森遗产”（Nansen Legacy）项目（https://arvenetternansen.com/）WP RF-1“物理驱动因子”的成果贡献。