type=continuous
signed=yes
projection=regular_ll
dx=1.
dy=1.
known_x = 1.
known_y = 1.
known_lat = -90.
known_lon = -179.5
wordsize=2
tile_x=180
tile_y=180
tile_z=1
tile_bdr=0
scale_factor=0.001
units="units please"
description="Surface roughness"