| Acronym | Meaning |
| TIDI | TIMED Doppler Interferometer |
| RTN | Regional Telecommunications Network |
| DMDS | DiMethyDiSulfide |
| N/A OR NA | Not Applicable |
| MACCM2 | Middle Atmosphere Community Climate Model |
| GST | GPS Science And Technology Program |
| KP | Geomagnetic Planetary Index |
| FCCSET | Federal Coordinating Council On Science |
| SAIC | Science Applications International Corporation |
| GRACE | Gravity Recovery And Climate Experiment |