| Acronym | Meaning |
| EPI | Electronic Position Indicator |
| BWI | Baltimore-Washington International Airport |
| PMS | Particle Measuring System |
| VHS | Video-Home System |
| L-DEO | Lamont-Doherty Earth Observatory |
| GSP | Geophysical Statistics Project |
| ESSCO | Environmental Science & Services Corporation |
| FDM | Full-depth Model |
| EED | Exposure Evaluation Division |
| PRMS | Precipitation Runoff Modeling System |