| Acronym | Meaning |
| AGL | Above Ground Level |
| FWHM | Full Width |
| DRL | Data Requirements List |
| ZOLD | Zeroth Order Logarithmic Distribution Function |
| GEISA | Management And Study Of Atmospheric Spectroscopic Information |
| ECG | Environmental Coordinating Group |
| EROS | Earth Resources Observation System |
| ELDORA/ASTERIX | France-United States Collaborative Development Of The ELDORA |
| GDAS | Global Data Assimilation System |
| UARC | Upper Atmosphere Research Corporation |