Canada (CGG2010)
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Author: J. Huang, M. Veronneau
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Created: 2010
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Resp: M. Veronneau
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Description:
The Canadian Geoid Model CGG2010 has been developed at the Geodetic Survey Division of Natural Resources Canada
(http://www.nrcan.gc.ca). This gravimetric model extends from 10°N to 90°N and from 10°W to 170°W
with a grid spacing of 2'. The remove-restore Stokes-Helmert method has been reformulated for the determination of
CGG2010 by a new Stokes kernel modification. In particular a spherical harmonic degree-band-limited kernel has been
adopted with (degree: 120, cap: 6°) and with transition from degree 90 to 150. The long wavelength components of
CGG2010 come from the GOCO01S geopotential model (including GRACE and GOCE information), which is further combined
with EGM2008 to increase the resolution of the global model. Improvement with respect to the previous geoid model
CGG2005 has been also achieved by including new data, i.e. the new marine gravity data, ArcGP gravity grids, and the
new Canadian Digital Elevation Data (CDED). The geodetic reference system is NAD83. The geoid model is validated using
GPS/levelling data, showing differences with a mean of -19.3 cm and a standard deviation of 13.5 cm, which goes down to
7.4 cm after filtering out systematic errors.
References:
J. Huang, M. Veronneau (2013). Canadian gravimetric geoid model 2010.
Journal of Geodesy, 87(8), pp. 771-790. DOI: 10.1007/s00190-013-0645-0
Web of Science ID:
DRCI:DATA2019017015400487
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