Earth Geopotential Model of 1996

The Earth Geopotential Model of 1996 (EGM96) is a global geoid model that transforms height values between the WGS84 ellipsoid and a geoid surface that is “closely associated” with mean sea level. The model data exist in a single binary file consisting of a 15-minute grid of elevation difference values between the two surfaces. The elevation differences at non-grid point locations are interpolated.

The "EGM96" vertical transform has the following parameters:

The path parameter can either be fully qualified or relative to the location of the data source file in which it is defined. The path string should not end with a slash character.