ERA5-Land contains finer-scale information of the land surface component than ERA5. The land-sea mask used to mask out sea, is a fractional land coverage raster map. Cells with a fraction of land < 0.5 are not considered to be land (see attached map below, red shows cells with a land coverage between (0, 0.5)).
In ERA5-Land data, what is the recommended way to fill in all those coastal cells which are not considered as land (land coverage < 0.5) with ERA5 data? I can imagine various solutions, yet it would be nice to have some recommendation if experience is already there.
Related material
- Land-Sea Mask
- Land-sea mask (netCDF file)
- Forum posts: https://confluence.ecmwf.int/x/7QEICQ; https://confluence.ecmwf.int/x/sgznDg
