| Acronym | Meaning |
| HPD | Hourly Precipitation Data |
| LAI | Leaf Area Index |
| ICH | Inter-Union Commission On The Lithosphere |
| NOSIE | NODC Ocean Science Information Exchange |
| LAPS | Local Area Prediction System |
| MAPS | Mesoscale Analysis And Prediction System |
| OPLE | Omega Position Location Equipment |
| TING | Thermosphere-Ionosphere Nested Grid Model |
| STEP | Stratosphere-Troposphere Exchange Project |
| FAPS | Freedom Attached Payloads |