| Acronym | Meaning |
| PSI | Plan Shear Indicator |
| GTOS | Global Terrestrial Observing System |
| PC | Geomagnetic Pulsations |
| SYDNEY 2000 | Olympics In Sydney |
| CDT | Conventional Defense Technology |
| SCCCAMP | South Central Coast Cooperative Aerometric Monitoring Program |
| HIAPER | High-Performance Instrumented Airborne Platform For Environmental Research |
| GDP | Government Development Platforms |
| MSLP | Mean Sea-level Pressure |
| ESIS | Earth Science Information System |