| Acronym | Meaning |
| PRECP | Program On Nonlinearity Of Acid Precipitation Process |
| U.S./JC | United States/Japan Cooperation |
| DORIS | Determination D'Orbite Et Radiopositionement Integre Par Satellite |
| EFC | Experimental Forecast Center |
| DEM | Digital Elevation Model |
| ALJ | Administrative Law Judge |
| ATEX | Atlantic Tradewind Experiment |
| TES | Transequatorial Scatter |
| DCR | Data Collection Request |
| PAR | Performance Assurance Requirements |