| Acronym | Meaning |
| ORNL | Oak Ridge National Laboratory |
| APACM | Atmospheric Physical And Chemical Monitor |
| HIRRLS | High Resolution Research Limb Sounder |
| BBS | Bulletin Board System |
| ESIS | ESA Space Information Systems |
| AC | Actual Commitment |
| IMAGE | Institute For Mathematics Applied To The Geosciences |
| ABS | Automatic Backup Shutdown |
| EMI | Electromagnetic Radiation Interference |
| CAPE | Convection And Precipitation/Electrification Experiment |