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Lambert conformal, secant or tangent, conical or bi-polar (normal or oblique) or Albers equal-area, secant or tangent, conical or bi-polar (normal or oblique)
Element | Contents | GRIB API keys
--- | --- | ---
1 |
    Data representation type (see WMO code table 6); eg
     3     Lambert conformal
     8     Albers equal area
     13    Oblique Lambert conformal
| gridType
2 | Number of points along X-axis. | Nx Ni
3 | Number of points along Y-axis. | Ny Nj
4 | Latitude of the first grid point. | latitudeOfFirstGridPointInDegrees*1000
5 | Longitude of the first grid point. | longitudeOfFirstGridPointInDegrees*1000
6 |
    Resolution flag:
     0     Direction increments not given.
     128   Direction increments given.
| ijDirectionIncrementGiven*128
7 | Orientation of the grid. The East longitude of the meridian which is parallel to the Y-axis along which latitude increases as the Y-coordinate increases. | orientationOfTheGridInDegrees*1000
8 | Reserved. Set to 0. |
9 | X-direction grid length. | xDirectionGridLength
10 | Y-direction grid length. | yDirectionGridLength
11 | Scanning mode flag (see WMO code table 8) | iScansNegatively jScansNegatively jPointsAreConsecutive
12 | Number of vertical coordinate parameters. | NV
13 |
    Projection centre flag:
     0      North pole is on the projection plane.
            Only one projection centre is used.
     128    South pole is on the projection plane.
            Only one projection centre is used.
     64     North pole is on the projection plane.
            Projection is bi-polar and symmetric.
     192    South pole is on the projection plane.
            Projection is bi-polar and symmetric.
| projectionCenterFlag
14 | First latitude from the pole at which the secant cone cuts the sphere. | firstLatitudeFromThePoleAtWhichTheSecantConeCutsTheSphereInDegrees*1000
15 | Second latitude at which the secant cone cuts the sphere. | secondLatitudeFromThePoleAtWhichTheSecantConeCutsTheSphereInDegrees*1000
16 | Reserved. Set to 0. |
17 | 0 Regular grid | gridType
18 |
    Earth flag:
     0     Earth assumed spherical with radius 6367.47 km.
     64    Earth assumed oblate spheroidal with size as determined by IAU in 1965:
             6378.160km,   6356.775km,   f=1/297.0
| earthIsOblate
19 |
    Components flag:
     0      Resolved u and v components of vector quantities relative to easterly
            and northerly directions.
     8      Resolved u and v components of vector quantities relative to the
            defined grid in the direction of increasing x and y (or i and j)
            coordinates respectively.
| uvRelativeToGrid
20 | Latitude of the southern pole. | latitudeOfSouthernPoleInDegrees*1000
21 | Longitude of the southern pole. | longitudeOfSouthernPoleInDegrees*1000
22 | Reserved. Set to 0. |

Notes: Grid lengths are in metres, at the 60-degree parallel nearest to the pole on the projection plane.

| 22.10.2010-->-->

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