The data set includes simulation data from the globally coupled ICON-Sapphire at 2.5km (dpp0067) and from OSI SAF v3 (copyright 2022 EUMETSAT, http://doi.org/10.15770/EUM_SAF_OSI_0013, http://doi.org/10.15770/EUM_SAF_OSI_0014). All data have been interpolated from the native r2b10 grid to a regular 2.5km grid (r14400x7200). Most of the data covers the Arctic Ocean and the subpolar northern hemisphere, with some files covering the entire globe. The temporal coverage varies from the entire simulation period (20 January to 31 March 2020) to subperiods (1 to 10 February 2020 or 20 to 22 February 2020). The naming convention of the output files and variable names follows mostly the ICON default. -- EUMETSAT Ocean and Sea Ice Satellite Application Facility. Global sea ice concentration [interim] climate data record 1978-2020 [2021-2022]. Norwegian and Danish Meteorological Institutes. Available from osisaf.met.no., doi.org/10.15770/EUM_SAF_OSI_0013 [EUM_SAF_OSI_0014] [last accessed March 15 2023]. All intellectual property rights of the OSI SAF products belong to EUMETSAT. The use of these products is granted to every interested user, free of charge. If you wish to use these products, EUMETSAT copyright credit must be shown by displaying the words "copyright (year) EUMETSAT" on each of the products used. Thanks to ICDC, CEN, University of Hamburg for data support.