What is the grid used ?
For most of our product, we are using the EASE-Grid 2.0 Global (EPSG 6933).
The only exception is for the L3 Brightness Temperature product in polar projection for which we are using the EASE-Grid 2.0 North (EPSG 6931) and EASE-Grid 2.0 South (EPSG 6932).
A Guide to EASE Grids
EASE-Grid 2.0: Incremental but Significant Improvements for Earth-Gridded Data Sets and correction