| Acronym | Meaning |
| ERTS | Earth Resources Technology Satellite |
| R-Z RELATIONSHIP | R = Precipitation Rate |
| ARES | Advanced Reentry System |
| ICO | Initial Operating Capability |
| IUCRM | Inter Union Commission On Radio Meteorology |
| STP | Solar Terrestrial Physics |
| STF | Short-Term Forecast |
| AVHRR | Advanced Very High Resolution Radiometer |
| RAMS | Regional Atmospheric Modeling System |
| NEWS | Network Extensible Windows System |