Arctic mean sea surface and monthly averaged sea level maps of Oct.2018 - Oct.2022

This dataset is derived from combined CryoSat-2 and ICESat-2 data during Oct.2018 and Oct.2022. Two files are included: CI-SSHA.nc contains Arctic mean sea surface in sea-ice-covered regions while CI-SeaLevel.nc contains monthly averaged sea level maps of Oct.2018 - Oct.2022. All the results are given as sea surface height anormallies (SSHA) referenced with DTU21 MSS, which is also given in the netcdf files. The resolution of the dataset is 10 km, with a coordinate system define by NSIDC's Northern Hemisphere Polar Stereographic Projection.