| Acronym | Meaning |
| APJ | The Astrophysical Journal |
| RFC | Request For Comment |
| AFTAC | Air Force Technical Applications Center |
| AP | Administrative Procedure |
| ATAMC | Air Transport Association Meteorological Committee |
| MARC | Middle Atmosphere Responses To Changes |
| HIPPI | High Performance Parallel Interface |
| AIRS | Atmospheric Infrared Sounder |
| ACD | Advanced Conceptual Design |
| USWRP | United States Weather Research Program |