| Acronym | Meaning |
| ESA | Engineering Support Activity |
| MACCM3 | Middle Atmosphere Community Climate Model |
| NERC | National Environment Research Council |
| NREL | National Resource Ecology Laboratory |
| TOS | Tiros Operational Satellite |
| SVT | Simulated Variable Thickness |
| PDS | Planetary Data System |
| PFA | Prime Factor Algorithm |
| NBS | National Bureau Of Standards |
| ADAAC | EOS Program |