Simulated Sea Ice (weighted by the Sea ice concentration) and Snow Thickness along the MOSAiC drift trajectory, from AWI-CM-1 and AWI-CM-3 nudged simulations.

Sea ice thickness (weighted by the Sea ice concentration) and snow (on sea ice) thickness from nudged simulations performed using the coupled climate models AWI-CM-1 (zonal wavenumber truncated at 20) and AWI-CM-3 (T20 truncation; Pithan et al., 2023) with a 1h relaxation time. The model data is collocated to the drift trajectory of the Multidisciplinary Drifting Observatory for the Study of the Arctic Climate (MOSAIC) across the Arctic Ocean, from 01 September 2019 until 31 August 2020. The collocation is done daily, by finding all model grid cells within the area covered by the distributed network of snow and sea ice measuring instruments deployed and maintained during MOSAIC. The sea ice and snow thickness is then spatially averaged for each day. Data is provided in three .nc files for each model and variable (wm_ice for sea ice thickness, m_snow for snow thickness) representing ensemble members 1 to 3.

本数据集涵盖采用耦合气候模式（coupled climate models）AWI-CM-1（纬向波数截断至20）与AWI-CM-3（T20截断；Pithan等，2023）开展的张弛逼近模拟（nudged simulations）结果，包含以海冰浓度加权的海冰厚度，以及海表面积雪厚度，模拟过程采用1小时弛豫时间（relaxation time）。
将上述模式数据与横跨北冰洋的北极气候多学科漂流观测站（Multidisciplinary Drifting Observatory for the Study of the Arctic Climate，MOSAIC）的漂流轨迹进行空间配准，时间范围为2019年9月1日至2020年8月31日。
该配准工作每日进行：首先筛选出MOSAIC项目期间部署并维护的海冰与积雪观测仪器分布式网络覆盖范围内的全部模式网格单元，随后对每日的海冰和积雪厚度开展空间平均处理。
本数据集为每个模式与每个变量提供3个.nc格式文件（其中wm_ice代表海冰厚度，m_snow代表积雪厚度），分别对应集合成员1至3。