| Acronym | Meaning |
| AI&O | Annual Inspection And Overhaul |
| ISRIC | International Soil Reference And Information Centre |
| FORTRAN 77 | N/A |
| OM | Office Of Meteorology |
| DED | Data Element Directory |
| MEP | Minority Engineering Program |
| NM | Network Management |
| SPC | Small Particle Count (or Counter) |
| NAC | NCAR Administrators Committee |
| CCPP | Climate Change Prediction Program |