| Acronym | Meaning |
| IAD | Dulles International Airport |
| PSC | Polar Stratospheric Cloud |
| MCC | Mesoscale Convective Complex |
| FRS | First Repository States |
| SSD | Solid-state Disk |
| AO | Annotated Outline |
| GAPEX | Ground-based Atmospheric Profiling Experiment |
| DASM | Design And Analysis Support Model |
| ECMRWF | European Centre For Medium-Range Weather Forecasts |
| CCCS | Change And Configuration Control System |