VALUE 
MEANING 
0

Latitude/Longitude Grid  Equidistant Cylindrical or Plate
Carree projection 
1

Mercator Projection Grid 
2

Gnomonic Projection Grid 
3

Lambert Conformal, secant or tangent, conical or bipolar
(normal or oblique) projection 
4

Gaussian Latitude/Longitude 
5

Polar Stereographic projection Grid 
6

Universal Transverse Mercator (UTM) projection 
7

Simple polyconic projection 
8

Albers equalarea, secant or tangent, conic or bipolar,
projection 
9

Miller's cylindrical projection 
10

Rotated latitude/longitude grid 
1112

Reserved 
13

Oblique Lambert conformal, secant or tangent, conical or
bipolar, projection 
14

Rotated Gaussian latitude/longitude grid 
1519

Reserved 
20

Stretched latitude/longitude grid 
2123

Reserved 
24

Stretched Gaussian latitude/longitude grid 
2529

Reserved 
30

Stretched and rotated latitude/longitude grids 
3133

Reserved 
34

Stretched and rotated Gaussian latitude/longitude grids 
3549

Reserved 
50

Spherical Harmonic Coefficients 
5159

Reserved 
60

Rotated spherical harmonic coefficients 
6169

Reserved 
70

Stretched spherical harmonics 
7179

Reserved 
80

Stretched and rotated spherical harmonic coefficients 
8189

Reserved 
90

Space view perspective or orthographic 
91191

(reserved  see Manual on Codes) 
192254

Reserved for local use 
NCEP usage follows 
192200

Undefined 
201

Arakawa semistaggered Egrid on rotated latitude/longitude
gridpoint array (1dimensional)

202

Arakawa filled Egrid on rotated latitude/longitude gridpoint array (1dimensional)

203

Arakawa semistaggered Egrid
on rotated latitude/longitude gridpoint array (2dimensional) 
204

Curvilinear Orthogonal Grid 
205

Arakawa NonE Staggered
rotated Latitude/Longitude Grid 
206253 
Undefined 
254 
Grid point locations specified by auxilliary file or GRIB message
