CGG2013a is the new default geoid
Help for GPS·H
GPS·H allows the conversion of ellipsoidal heights h, that are either NAD83 (CSRS) or ITRF, to orthometric heights H (heights above mean sea level) by using a gravimetric or hybrid geoid model. CGG2013 and HTv2_0 convert to CGVD2013 and CGVD28, respectively. The other geoid models do not convert to either CGVD2013 or CGVD28, but to their own reference system.
The on-line version accepts the following types of input coordinates: geographic, Cartesian and UTM/MTM/Stereographic. By clicking the "Batch Processing" box, you can submit coordinates in a file. The "Input H" box is for the reversed conversion (H to h).
View documentation for GPS·H
Use of Canadian Geodetic Survey products and data is subject to the Open Government Licence - Canada
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