4. The physiographic fields

The physiographic fields are averaged or interpolated on the specified grid by the program PGD. They are stored in a file, called PGD file, but only with the physiographic 2D fields, the geographic and grid data written in it.

During the PGD facility :

  1. You choose the surface schemes you will use.
  2. You choose and define the grid for the surface.
  3. The physiographic fields are defined on this grid.

Subsections