Question: Can I download Geoid03 from the Advantage web site?

Answer: Yes. The Geoid03 geoid model executable file Geoid03.exe and the associated BIN files are available to download below.

Important Note: You cannot use the Geoid03 files available from the NGS web site in SKI, SKI-Pro, or LGO.  You must use the files below.  These files have been modified to work in SKI, SKI-Pro, and LGO.

For step-by-step instructions on how to install a geoid model in LGO or SKI-Pro, click here to access the Frequently Asked Question: "I just installed SKI-Pro and I want to see orthometric heights but I can't compute geoid separations, Why?"

Geoid03.exe (193K)
Geoid03.doc (212K)

• This document describes how to install Geoid03 in SKI and SKI-Pro.

g2003u01.bin (4.8M) Grid Limits: 40 to 58N, 111 to 130W
g2003u02.bin (4.8M) Grid Limits: 40 to 58N, 094 to 113W
g2003u03.bin (4.8M) Grid Limits: 40 to58N, 077 to 096W
g2003u04.bin (4.8M) Grid Limits: 40 to 58N, 060 to 079W
g2003u05.bin (4.8M) Grid Limits: 24 to 42N, 111 to 130W
g2003u06.bin (4.8M) Grid Limits: 24 to 42N, 094 to 113W
g2003u07.bin (4.8M) Grid Limits: 24 to 42N, 077 to 096W
g2003u08.bin (4.8M) Grid Limits: 24 to 42N, 060 to 079W

Note: File g2003u07.bin is the current revision that was recently updated by NGS.

Geoid03.zip (32M)

• This file contains all the above files zipped using WinZip.  It is a self-extracting zip file.  Download this file, double-click on it, and then choose a folder to unzip the geoid model into.  Then follow the instructions in the Frequently Asked Question: "I just installed SKI-Pro and I want to see orthometric heights but I can't compute geoid separations, Why?"