neXtSIM_DG input data for realistic case

Input data needed to run the NH_benchmark from the neXtSIM_DG dynamical core GPU experiments code at 3.125km resolution. The data comes in two variants, one with the proper land mask and one that has only a closed boundary around the domain. The athmospheric forcing is the same in both cases. Additional coarser grids and raw data for longer time periods are available here. The preprocessing scripts can be found in the linked the code repository. Initial conditions and ocean forcing is based on TOPAZ4 reanalysis, atmospheric forcing is based on ERA5 reanalysis. Generated using E.U. Copernicus Marine Service Information; 10.5194/os-8-633-2012Generated using Copernicus Atmosphere Monitoring Service information 2010; 10.1002/qj.3803