| Acronym | Meaning |
| CCM4 | Community Climate Model 4 |
| MACCM2 | Middle Atmosphere Community Climate Model |
| GWE | Global Weather Experiment |
| DRA | Defense Research & Applications |
| NET | Noise-equivalent Temperature |
| GSTS | Ground Surveillance And Tracking System |
| UAO | Upper Atmosphere Observatory |
| ATS | Advanced Technology Satellite |
| MMAC | Multi-Media Access Center |
| ISTP | International Solar Terrestrial Program |