| Acronym | Meaning |
| DAR | Data Acquisition Request |
| FEMA | Federal Emergency Management Agency |
| PRC | People's Republic Of China |
| AM | Audio Modulation |
| PEL | Photo-electron Layer |
| SDSC | San Diego Supercomputing Center |
| MAC | Apple Macintosh Computer |
| MACCM3 | Middle Atmosphere Community Climate Model |
| APRM | Average Power Range Monitor |
| ASRL | Atmospheric Science Research Laboratory |