| Code figure |
Description |
Unit |
Status |
| 0 |
Latitude/longitude |
Also called equidistant cylindrical, or Plate Carrée |
Operational |
| 1 |
Rotated latitude/longitude |
|
Operational |
| 2 |
Stretched latitude/longitude |
|
Operational |
| 3 |
Stretched and rotated latitude/longitude |
|
Operational |
| 4 |
Variable resolution latitude/longitude |
|
Operational |
| 5 |
Variable resolution rotated latitude/longitude |
|
Operational |
| 6-9 |
Reserved |
|
Operational |
| 10 |
Mercator |
|
Operational |
| 11-19 |
Reserved |
|
Operational |
| 20 |
Polar stereographic projection |
Can be south or north |
Operational |
| 21-29 |
Reserved |
|
Operational |
| 30 |
Lambert conformal |
Can be secant or tangent, conical or bipolar |
Operational |
| 31 |
Albers equal area |
|
Operational |
| 32-39 |
Reserved |
|
Operational |
| 40 |
Gaussian latitude/longitude |
|
Operational |
| 41 |
Rotated Gaussian latitude/longitude |
|
Operational |
| 42 |
Stretched Gaussian latitude/longitude |
|
Operational |
| 43 |
Stretched and rotated Gaussian latitude/longitude |
|
Operational |
| 44-49 |
Reserved |
|
Operational |
| 50 |
Spherical harmonic coefficients |
|
Operational |
| 51 |
Rotated spherical harmonic coefficients |
|
Operational |
| 52 |
Stretched spherical harmonic coefficients |
|
Operational |
| 53 |
Stretched and rotated spherical harmonic coefficients |
|
Operational |
| 54-89 |
Reserved |
|
Operational |
| 90 |
Space view perspective or orthographic |
|
Operational |
| 91-99 |
Reserved |
|
Operational |
| 100 |
Triangular grid based on an icosahedron |
|
Operational |
| 101 |
General unstructured grid |
|
Operational |
| 102-109 |
Reserved |
|
Operational |
| 110 |
Equatorial azimuthal equidistant projection |
|
Operational |
| 111-119 |
Reserved |
|
Operational |
| 120 |
Azimuth-range projection |
|
Operational |
| 121-139 |
Reserved |
|
Operational |
| 140 |
Lambert azimuthal equal area projection |
|
Operational |
| 141-999 |
Reserved |
|
Operational |
| 1000 |
Cross-section grid with points equally spaced on the horizontal |
|
Experimental |
| 1001-1099 |
Reserved |
|
Operational |
| 1100 |
Hovmöller diagram grid with points equally spaced on the horizontal |
|
Experimental |
| 1101-1199 |
Reserved |
|
Operational |
| 1200 |
Time section grid |
|
Experimental |
| 1201-32767 |
Reserved |
|
Operational |
| 32768-65534 |
Reserved for local use |
|
Operational |
| 65535 |
Missing |
|
Operational |