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GGMplus provides a new ultra-high resolution picture of Earth's gravity field.
The model has been developed by scientists of Curtin University and Technische Universität München. It is based on satellite-measured (GOCE, GRACE)and terrestrial gravity, and refined with topographic data, GGMplus provides estimates of Earth's gravity acceleration at about 3 billion points. GGMplus gravity maps are available for all continents with 60 degrees North and South latitude.
Visit the project's website for more details
http://geodesy.curtin.edu.au/research/models/GGMplus/