| Acronym | Meaning |
| TOPS | Transcendental Operating System |
| GTS | Global Telecommunication System |
| IAHS | International Association Of Hydrological Sciences |
| ASHOE | Airborne Southern Hemisphere Ozone Experiment |
| WVR | Water Vapor Radiometers |
| ESDIM | Earth System Data And Information Management |
| SHF | Super High Frequency |
| NDSC | Network For Detection Of Stratospheric Change |
| DB | Direct Broadcast |
| IAS | Indicated Air Speed |