[Service_Parameters: Service_Topic='MODELS', Service_Term='LAND SURFACE MODELS']
USGG2003 GEOID MODELEntry ID: NOAA_NGS_USGG2003
Abstract: USGG2003 is a gravimetric geoid model, and is an update of the G99SSS model. USGG2003 covers the coterminous U.S., Alaska, Hawaii, Puerto Rico and the American Virgin Islands.
For working with the USGG2003 model, two programs are provided as source code and as compiled executables for both Sun Unix (INTG and XNTG) and IBM PC (INTG.EXE and XNTG.EXE) platforms. INTG will interpolate geoid heights ... from data files using user-provided coordinates. XNTG will extract sub-grids from the binary data files, as well as convert back and forth between binary and ASCII, or just give statistics about a data file.
To use USGG2003, the INTG executable and at least one data file must be downloaded. You need only to select those data files that cover your region, and the program will recognize which files are present. Select one or more of the data files either by using the graphical or data interfaces.
Due to numerous requests, the binary formats of the data files are now available in little-endian binary format for Intel based PCs and also in big-endian binary format (IEEE Std. 754) for use on Unix platforms.
Download the binary data file for your specific operating system.
ISO Topic Category
Access Constraints None
Use Constraints This program and supporting information is furnished by the Government of the United States of America, and is accepted and used by the recipient with the understanding that the United States Government makes no warranties, express or implied, concerning the accuracy, completeness, reliability, or suitability of this program, of its constituent parts, or of any supporting data. The Government of ... the United States of America shall be under no liability whatsoever resulting from any use of this program. This program should not be relied upon as the sole basis for solving a problem whose incorrect solution could result in injury to person or property. This program is property of the Government of the United States of America. Therefore, the recipient further agrees not to assert proprietary rights therein and not to represent this program to anyone as being other than a Government program.
Distribution Media: Online
Fees: No fees
Role: TECHNICAL CONTACT
Email: ngs.infocenter at noaa.gov
National Geodetic Survey, NOAA Information Services Branch 1315 East-West Highway
City: Silver Spring
Province or State: MD
Postal Code: 20910-3282
Role: SERF AUTHOR
Email: Tyler.B.Stevens at nasa.gov
5700 Rivertech Court
Province or State: MD
Postal Code: 20737
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