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Workspace Method r_geoidWGS84

Description

Sets the geoid radius to match the WGS-84 reference ellipsoid.

For 1D, the geoid radius is set to the radius of curvature of the
WGS-84 ellipsoid in the north-south direction. The latitude is
taken from lat_grid, that then is demanded to have length 1.

For 2D and 3D, r_geoid is set to the radius of the WGS-84
ellipsoid for the crossing points of the latitude and longitude
grids.

Please note that the latitude grid must contain true latitudes
if the function shall give correct result, and not just arbitrary
orbit angles which is allowed elsewhere for 2D cases.

Authors: Patrick Eriksson

Synopsis

r_geoidWGS84(

r_geoid, atmosphere_dim, lat_grid, lon_grid )

Variables

OUT	r_geoid	(Matrix)	Geoid radius.
IN	atmosphere_dim	(Index)	The atmospheric dimensionality (1-3).
IN	lat_grid	(Vector)	The latitude grid.
IN	lon_grid	(Vector)	The longitude grid.