Higher Resolution Latitude/Longitude Source-grid

VALIDATION

official and could change at any time, so it should not be used for any official products.

Octet No. | Contents |
---|---|

15 | Shape of the Earth (See Code Table 3.2) |

16 | Scale Factor of radius of spherical Earth |

17-20 | Scale 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 | Ni—number of points along a parallel |

35-38 | Nj—number of points along a meridian |

39-42 | Basic angle of the initial production domain (see Note 1) |

43-46 | Subdivisions of basic angle used to define extreme longitudes and latitudes, and direction increments (see Note 1) |

47-50 | La_{1}—latitude of first grid point
(see Note 1) |

51-54 | Lo_{1}—longitude of first grid point
(see Note 1) |

55 | Resolution and component flags (see Flag Table 3.3) |

56-59 | La_{2}—latitude of last grid point
(see Note 1) |

60-63 | Lo_{2}—longitude of last grid point
(see Note 1) |

64-67 | Di—i direction increment (see Note1) |

68-71 | Dj—j direction increment (see Note 1) |

72 | Scanning mode (flags — see Flag Table 3.4) |

73-76 | Nis - Number of points along a parallel in source-grid |

77-80 | Njs - Number of points along a meridian in source-grid |

81-84 |
Basic angle of the initial production domain for source-grid (see Note 1) |

85-88 |
Subdivisions of basic angle used to describe extreme latitudes and longitudes, direction increments and differencing of latitudes and longitudes for the source-grid (see Note 1) |

89-92 | La1S- Latitude of first grid point of source-grid (see Note 1) |

93-96 | Lo1S- Longitude of first grid point of source-grid (see Note 1) |

97 | Resolution and component flags of source-grid (see Table 3.3) |

98-101 | La2S- Latitude of last point of source-grid (see Note 1) |

102-105 | Lo2S- Longitude of last point of source-grid (see Note 1) |

106-1096 | Dis—i direction increment of source-grid (see Note 1) |

110-113 | Djs—j direction increment of source-grid (see Note 1) |

114 | Type of sampling employed to select data from source-grid (See code Table 3.30) |

115-118 | For statistical sampling over a rectangular Lat/Lon area, (latitude of
top of rectangle - latitude of nominal point). For statistical sampling over a rectangular surface area, (distance in metres between top of rectangle and the nominal point) |

119-122 | For statistical sampling over a rectangular Lat/Lon area, (latitude of
bottom of rectangle - latitude of nominal point). (see Note) For statistical sampling over a rectangular surface area, (distance in metres between bottom of rectangle and the nominial point) |

123-126 | For statistical sampling over a rectangular Lat/Lon area, (longitude of
right side of rectangle - longitude of nominal point). For statistical sampling over a rectangular surface area, (distance in metres between right side of rectangle and the nominal point) |

127-130 | For statistical sampling over a rectangular Lat/Lon area, (longitude of
left side of rectangle - longitude of nominal point). For statistical sampling over a rectangular surface area, (distance in metres between left side of rectangle and the nominal point) |

Notes:1. Basis angle of the initial
production domain and subdivisions of this basic angle are provided to
manage cases where the recommended unit of 10
^{-6} degrees is
not
applicable to describe the extreme longitudes and latitudes, and
direction increments.
For these last six descriptors, the unit is equal to the ratio of the
basic angle and the subdivisions number. For ordinary cases, zero
and missing
values should be coded, equivalent to respective values of 1 and 10^{6}
(10^{-6} degrees unit). |