| Acronym | Meaning |
| HEOS | Highly Eccentric Orbit Satellite |
| IDI | Instrumentation Development And Intercomparisons |
| SAV | State-of-the-atmosphere Variable |
| EIR | Eidgenossisches Institut Fur Reaktorforschung |
| RCA | Request For Contract Action |
| SLPA | Sea-Level Pressure Anomaly |
| AGDATS | Air-Ground Data Telemetry System |
| BAI | Biosphere-Atmosphere Interactions Project |
| CAE | Cooler |
| BTU | British Thermal Unit |