International Service for the Geoid


Search in ISG Website




Services - Geoid Repository

Regional Models

Ghana (GGG2017)

  Authors: C.I. Yakubu, V.G. Ferreira, S. Asante     Created: 2017    Resp: C.I. Yakubu 
      Status: PUBLIC   
The Ghanaian Gravimetric Geoid 2017 (GGG2017) covers the area from 4°N to 12°N in latitude and from 4°W to 2°E in longitude. It is referred to the WGS84 reference ellipsoid and it is comnputed from EGM2008 up to degree and order 222. This selection is performed by comparing 11 GPS/levelling observations with the geoid heights from different global gravity models. The resulting error standard deviation is equal to 45.7 cm.

C.I. Yakubu, V.G. Ferreira, S. Asante (2017). Towards the Selection of an Optimal Global Geopotential Model for the Computation of the Long-Wavelength Contribution: A Case Study of Ghana. Geosciences, 7(4), 113. DOI: 10.3390/geosciences7040113

Web of Science ID: