GRIB2 - TABLE 3.2

Shape of the Reference System

In Section 3, Octet 15
(Does not apply to grid templates 50-53, 100, 120, and 1200)

Revised 07/16/2013
Red text depicts changes made since 04/04/2013



Code Figure Meaning
0
Earth assumed spherical with radius = 6,367,470.0 m
1
Earth assumed spherical with radius specified (in m) by data producer
2
Earth assumed oblate spheriod with size as determined by IAU in 1965 (major axis = 6,378,160.0 m, minor axis = 6,356,775.0 m, f = 1/297.0)
3
Earth assumed oblate spheriod with major and minor axes specified (in km) by data producer
4
Earth assumed oblate spheriod as defined in IAG-GRS80 model (major axis = 6,378,137.0 m, minor axis = 6,356,752.314 m, f = 1/298.257222101)
5
Earth assumed represented by WGS84 (as used by ICAO since 1998) (Uses IAG-GRS80 as a basis)
6 Earth assumed spherical with radius = 6,371,229.0 m
7 Earth assumed oblate spheroid with major and minor axes specified (in m) by data producer
8 Earth model assumed spherical with radius 6,371,200 m, but the horizontal datum of the resulting Latitude/Longitude field is the WGS84 reference frame
9 Earth represented by the OSGB 1936 Datum, using the Airy_1830 Spheroid, the Greenwich meridian as 0 Longitude, the Newlyn datum as mean sea level, 0 height.
10-191
Reserved
192-254
Reserved for Local Use
255
Missing


Notes:

  WGS84 is a geodetic system that uses IAG-GRS80 as a basic.


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