ARTS built-in documentation server

Workspace Variable r_geoid

Geoid radius.

Geometrical altitudes are defined as the vertical distance above the
geoid, and the geoid is the reference surface used when giving, for
example, z_surface and z_field. 

The geoid is defined by giving the radius from the coordinate centre
to the geoid surface for each crossing of the latitude and longitude
grids. The geoid should normally be selected to be an ellipsoid but
any shape is allowed. For 1D calculations, the geoid is by
definition a sphere.

The radius for a point between the grid crossings is obtained by
linear (2D) or bi-linear (3D) interpolation of the r_geoid. For 1D
cases the geoid radius is constant.

See further the ARTS user guide (AUG). Use the index to find where
this variable is discussed. The variable is listed as a subentry to
"workspace variables".

Usage:      Set by using a method for a geodetic datum.

Unit:       m

Dimensions: [ lat_grid, lon_grid ]

Group: Matrix

Specific methods that can generate r_geoid

Generic and supergeneric methods that can generate r_geoid

Specific methods that require r_geoid

Generic and supergeneric methods that can use r_geoid

Agendas that can generate r_geoid

Agendas that require r_geoid