GRIB2 - GRID TEMPLATE 3.20
Polar stereographic projection
Created 07/20/2005

Octet | Contents
--- | ---
15 | Shape of the Earth (see Code Table 3.2)
16 | Scale factor of radius of spherical Earth
17-20 | Scaled value of radius of spherical Earth
21 | Scale factor of major axis of oblate spheroid Earth
22-25 | Scaled value of major axis of oblate spheroid Earth
26 | Scale factor of minor axis of oblate spheroid Earth
27-30 | Scaled value of minor axis of oblate spheroid Earth
31-34 | Nx ― number of points along the x-axis
35-38 | Ny ― number of points along the y-axis
39-42 | La1 ― latitude of first grid point
43-46 | Lo1 ― longitude of first grid point
47 | resolution and component flags (see Flag Table 3.3 and Note 1)
48-51 | LaD ― latitude where Dx and Dy are specified
52-55 | LoV ― orientation of the grid (see Note2)
56-59 | Dx ― x-direction grid length (see Note 2)
60-63 | Dy ― y-direction grid length (see Note 3)
64 | Projection centre flag (see Flag Table 3.5)
65 | Scanning mode (see Flag Table 3.4)

Notes: 1. The resolution flags (bits 3-4 Flag table 3.3) are not applicable 2. LoV is the longitude value of the meridian which is parallel to the y-axis (or columns of the grid) along which latitude increases as the y-coordinate increases (the orientation longitude may or may not appear on a particular grid). 3. Grid length is in units of 10-3 m at the latitude specified by LaD. 4. Bit 2 of the projection flag is not applicable to the polar stereographic projection.

Back