| Acronym | Meaning |
| ARCC | American Rivers Conservation Council |
| SSM/I | Special Sensor For Microwave/Imaging |
| MM4 | Mesoscale Model |
| EOR | Emergency Operations Center |
| WATS | Wide Area Telecommunications Service |
| MACRAT | Middle-Atmosphere Chemistry |
| CCM5 | Community Climate Model 5 |
| FFS | Flight Facilities Survey |
| SOLSTICE | Solar/Stellar Irradiance Comparison Experiment |
| LRT | Low Rate Type |