| Acronym | Meaning |
| IDB | Immediate Direct Broadcast |
| IMAGE | N/A |
| M&O | Maintenance And Operations |
| EXPRESSO | EXPeriment For REgional Sources And Sinks Of Oxidants |
| SJVAQS | San Joaquin Valley Air Quality Study |
| SPC | Sector Processing Center |
| AMOS | Automatic Meteorological Observation System |
| GWS | Gateway Service |
| AU | Astronomical Unit |
| MSI | Measurements |