| Acronym | Meaning |
| TID | Traveling Ionospheric Disturbance |
| IAAC | International Antarctic Analysis Center |
| SCS | Soil Conservation Service |
| AEOS | Analytic Equation-of-state |
| AW | Annual Worth |
| GTMS | Global Thermospheric Mapping Study |
| MCTEX | Maritime Continent Thunderstorm Experiment |
| EG&G | Inc. |
| ISRIC | International Soil Reference And Information Centre |
| PMR | Pacific Missile Range |