Gridded sea ice freeboard data accompanying the article "Year-Round High-Resolution Sea Ice Freeboard Retrieval Using ICESat-2 ATL03 Photon Data"

This dataset provides monthly gridded sea ice freeboard estimates derived from ICESat-2 ATL03 data, covering the period from October 2021 to September 2022. The product is generated on a 25-km polar stereographic grid (EPSG:3411) of 448 × 304 grid cells, and is distributed as a single NetCDF file. Sea ice freeboard is defined as the height of the ice surface relative to the local sea surface and represents a key intermediate parameter for estimating sea ice thickness and investigating sea ice thermodynamic and dynamic processes. The dataset includes: Monthly sea ice freeboard (freeboard) stored as a three-dimensional array with dimensions (y, x, time) Two-dimensional geographic coordinates (lon, lat) corresponding to each grid cell A time variable representing monthly time steps