| Acronym | Meaning |
| AT | Abnormal Transient |
| AEGIS | Atmosphere Ecosystem Gas Interchange Study |
| APRM | Average Power Range Monitor |
| FR | Federal Register |
| WATOX | Western Atlantic Ocean Experiment |
| GISST | Global Sea Ice And Sea Surface Temperature |
| APS | Auxiliary Power System |
| AMS | Atomic Mass Spectrometry |
| RR | Risk Reduction |
| FRD | Forecast Research Division |