| Acronym | Meaning |
| ALE | Arbitrary Lagrangian-Eulerian |
| DOPLIGHT | Doppler And Lightning Program |
| MPA | Maintenance Purchase Award |
| UGGI | See IUGG |
| ATR | Attenuated Total Reflection |
| ASCENT | Atmospheric Sounding |
| RA | Radio Active |
| DDE | Dynamic (or Direct) Data Exchange |
| PMB | Performance Measurement Baseline |
| LM | Large Model |