Section 3 - Template 1 : Rotated Latitude/longitude (or equidistant cylindrical, or Plate Carree)

Templates for Section 3

More Sections

Octets	Key	Type	Content
15-72			Same as Grid Definition Template 3.0 (see Note 1)
73-76	latitudeOfSouthernPole	signed	Latitude of the southern pole of projection
77-80	longitudeOfSouthernPole	unsigned	Longitude of the southern pole of projection
81-84	angleOfRotation	real	Angle of rotation of projection
85-nn	pl	unsigned	List of number of points along each meridian or parallel (These octets are only present for quasi-regular grids as described in note 3)

Notes:

( 1) Basic 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, 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 10⁶ (10^-6 degrees unit).

( 2) Three parameters define a general latitude/longitude coordinate system, formed by a general rotation of the sphere. One choice for these parameters is:
     (a) The geographic latitude in degrees of the southern pole of the coordinate system, theta_p for example.
     (b) The geographic longitude in degrees of the southern pole of the coordinate system, lambda_p for example.
     (c) The angle of rotation in degrees about the new polar axis (measured clockwise when looking from the southern to the northern pole) of the coordinate system, assuming the new axis to have been obtained by first rotating the sphere through lambda_p degrees about the geographic polar axis, and then rotating through (90 + theta_p) degrees so that the southern pole moved along the (previously rotated) Greenwich meridian.

( 3) See Note (3) under Grid Definition Template 3.0.