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digital elevation modeling and mapping techniques

The National Geophysical Data Center (NGDC) is part of the US Dept of Commerce, National Oceanic & Atmospheric Administration, National Environmental Satellite, Data, & Information Service

The GIS Data Depot provides FREE GIS data downloads and creates custom GIS data CD-ROMs for CAD, mapping, and location based applications.

ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is a high resolution imaging instrument that is flying on the Terra satellite. ASTER will obtain detailed maps of land surface temperature, emissivity, reflectance and elevati...

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What's up at PlanetObserver

MathWorks is the world’s leading developer of technical computing software for engineers and scientists in industry, government, and education

Categorised list of freely available GIS datasets. Includes everything from administrative boundaries to population, and from terrorist incidents to global vegetation at the last glacial maximum.

Acronym Finder: The Acronym Finder is a searchable database of over 4 million acronyms, abbreviations and meanings. Covers: common acronyms, computers, science, technology, government, telecommunications, and military acronyms.