| Acronym | Meaning |
| GCM | General Circulation Model |
| AIDA | Arecibo Initiative With Dynamics Of The Atmosphere |
| CAMAC | Computer-automated Measurement And Control |
| GEO | Geosciences Directorate |
| SPO | Sacramento Peak Observatory |
| NLDS | National Lightning Detection System |
| DGPS | Differential Global Positioning System |
| GEO 2000 | National Science Foundation's Geosciences Beyond 2000 |
| DS | Lightning Detection Systems |
| MVS | Multiple Virtual Storage |