|
|
GRIB data is archived
in one of the following spatial coordinate systems :
- Spherical Harmonics (SH) - Upper air fields.
- Gaussian
Grid (GG) - Surface and some upper air fields.
- Latitude/Longitude (LL) - other centres, wave data.
The correspondence between the three types of grid resolutions is as follows
:
| Spectral |
Gaussian |
Lat/lon |
| T63 |
N48 |
1.875 |
| TL95 |
N48 |
1.875 |
| T106 |
N80 |
1.125 |
| TL159 |
N80 |
1.125 |
| T213 |
N160 |
0.5625 |
| TL255 |
N128 |
0.7 |
| TL319 |
N160 |
0.5625 |
| TL399 |
N200 |
0.450 |
| TL511 |
N256 |
0.351 |
| TL639 |
N320 |
0.28125 |
| TL799 |
N400 |
0.225 |
| TL1023 |
N512 |
0.176 |
| TL1279 |
N640 |
0.141 |
| TL2047 |
N1024 |
0.088 |
|
