| Acronym | Meaning |
| CCM5 | Community Climate Model 5 |
| STEP | Solar Terrestrial Energy Program |
| AWS | Air Weather Service |
| OR | Operational Research |
| IPC | Instrument Processing Center |
| BARC | Bhabha Atomic Research Centre |
| CAS | Committee On Atmospheric Sciences |
| PDW | Preliminary Design Walk-through |
| ECHAM4 | European Center HAMburg 4 |
| ANSI | American National Standards Institute |