Get raster with AquaMaps hcaf_id for cells contained by the BOEM blocks boem_blocks.
get_am_cell_blocks_grd()A terra raster layer with 1 layer:
half degree cell identifier (integer) from am_cell_blocks
Cannot simply load this as an available dataset into the R package since
terra::rast() only loads a pointer to raster file, not its contents.
am_cell_blocks_grd <- get_am_cell_blocks_grd()