Element | Contents | GRIB API keys |
---|---|---|
1 | Data representation type , (see WMO code table 6) = 4 | gridType |
2 | Not specified for quasi-regular (reduced) grids. | |
3 | Number of points along a meridian (Nj). | Nj Ny |
4 | Latitude of the first grid point, La1. | latitudeOfFirstGridPointInDegrees*1000 |
5 | Longitude of the first grid point, Lo1. | longitudeOfFirstGridPointInDegrees*1000 |
6 | Resolution flag, = 0 (direction increments not given) | ijDirectionIncrementGiven*128 |
7 | Latitude of the last grid point, La2. | latitudeOfLastGridPointInDegrees*1000 |
8 | Longitude of the last grid point, Lo2. | longitudeOfLastGridPointInDegrees*1000 |
9 | i direction increment. Cannot be used for quasi-regular (reduced) grids. | iDirectionIncrementInDegrees*1000 |
10 | Number of parallels between a pole and the Equator,ie the gaussian grid number. | numberOfParallelsBetweenAPoleAndTheEquator |
11 | Scanning mode flags (see WMO code table 8) | iScansNegatively jScansNegatively jPointsAreConsecutive |
12 | Number of vertical coordinate parameters. | NV |
13 | Latitude of the southern pole of rotation. | latitudeOfSouthernPoleInDegrees*1000 |
14 | Longitude of the southern pole of rotation. | longitudeOfSouthernPoleInDegrees*1000 |
15 | Latitude of the pole of stretching. | latitudeOfPoleOfStretchingInDegrees *1000 |
16 | Longitude of the pole of stretching. | longitudeOfPoleOfStretchingInDegrees *1000 |
17 | 1 = quasi-regular (reduced) grid. | gridType |
18 | Earth flag: | earthIsOblate |
19 | Components flag. | uvRelativeToGrid |
20-22 | Reserved. Set to 0. | |
23-nn | NN, the number of points along a full parallel (360 degrees) is defined for each latitude row in the sub-area. The number of parallels is given by Nj above. See the algorithm below for calculating the actual number of points along each sub-area latitude row (ECMWF convention). | pl |
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