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ElementContentsGRIB API keys
1
Data representation type (see WMO code table 6); e.g.
3 Lambert conformal
8 Albers equal area
13 Oblique Lambert conformal
gridType
2Number of points along X-axis.Nx
Ni
3Number of points along Y-axis.Ny
Nj
4Latitude of the first grid point.latitudeOfFirstGridPointInDegrees*1000
5Longitude of the first grid point.longitudeOfFirstGridPointInDegrees*1000
6
Resolution flag:
0 Direction increments not given.
128 Direction increments given.
ijDirectionIncrementGiven*128
7Orientation 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
8Reserved. Set to 0. 
9X-direction grid length.xDirectionGridLength
10Y-direction grid length.yDirectionGridLength
11Scanning mode flag (see WMO code table 8)

iScansNegatively

jScansNegatively

jPointsAreConsecutive

12Number 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
14First latitude from the pole at which the secant cone cuts the sphere.firstLatitudeFromThePoleAtWhichTheSecantConeCutsTheSphereInDegrees*1000
15Second latitude at which the secant cone cuts the sphere.secondLatitudeFromThePoleAtWhichTheSecantConeCutsTheSphereInDegrees*1000
16Reserved. Set to 0. 
170 Regular gridgridType
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
20Latitude of the southern pole.latitudeOfSouthernPoleInDegrees*1000
21Longitude of the southern pole.longitudeOfSouthernPoleInDegrees*1000
22Reserved. Set to 0. 

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

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