| Acronym | Meaning |
| FRD | Forecast Research Division |
| SPAN | Space Physics Analysis Network |
| EASDS | Earth Science And Applications Data System |
| BOD | Beneficial Occupancy Date |
| ATA | Air Transport Association |
| ACR | Active Cavity Radiometer |
| ACRIM | Active Cavity Radiometer Irradiance Monitor |
| NOARL | Naval Oceanographic And Atmospheric Research Laboratory |
| ELP | Equipment Loan Program |
| APM | Axial Power Monitor |