Snyder equal-area projection
Snyder equal-area projection is used in the ISEA discrete global grids. The first projection studies was conducted by John P. Snyder in the 1990s.
It is a modified Lambert azimuthal equal-area projection, most adequate to the polyhedral globe, a truncated icosahedron with 32 same-area faces.
For non-exact approximations it can be replaced by Gnomonic projection, as in H3 Uber.
Use in the ISEA model
As stated by Carr at al. article, page 32:
