| Acronym | Meaning |
| ARMAR | Airborne Rain Mapping Radar |
| ECMWF | European Centre For Medium-range Weather Forecasting |
| ARC | Antarctic Research Center |
| SSU | Stratospheric Sounding Unit |
| GEO 2000 | National Science Foundation's Geosciences Beyond 2000 |
| IMAGE | Institute For Mathematics Applied To The Geosciences |
| WBRT | Weather Bureau Radio Thoedolite |
| ACGIH | American Conference Of Governmental Industrial Hygienists |
| AP | Anomalous Propagation |
| LLR | Lunar Laser Ranging |