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Global Models

Global geoid models in Trimble format

EGM2008 2.5' global geoid model(EGM2008 2_5' grid.zip - 131996 KB)Global EGM2008 2.5' latitude and longitude interval geoid model. The Trimble format GGF file (EGM08-25.ggf) is available from the downloadable ZIP file.

EGM 2008 1' global geoid model(EGM2008 1' grid.zip - 805949 KB)Global EGM2008 1' latitude and longitude interval geoid model. The Trimble format GGF file (EGM08-1.ggf) is available from the downloadable ZIP file.

EGM96 Geoid Model, World Wide(EGM96.zip - 3115 KB)Global EGM96 15' latitude and longitude interval geoid model. The Trimble Format GGF file (Ww15mgh.ggf) is available from the downloadable ZIP file.

OSU91A(OSU91A.GGF - 2029 KB)Global OSU91A geoid model in a Trimble format GGF file.

DMA10(DMA10.GGF - 3 KB)Global DMA10 geoid model in a Trimble format GGF file.