| Acronym | Meaning |
| IGU | International Geographical Union |
| ENSO | El Ni-o-Southern Oscillation |
| GCTE | Global Change And Terrestrial Ecosystems |
| DBX | Debugger For UNIX |
| DSI (+/OR MOD) | Defense Security Installation |
| HRSO | High Resolution Solar Observatory |
| DDF | Digital Data Formatter |
| EEID | EOSDIS External Interface Document |
| LDS | Loral Defense Systems |
| AMOS | Automatic Meteorological Observation System |