| Acronym | Meaning |
| MHZ | Megahertz |
| CD | Compact Disk |
| ESA | Endangered Species Act |
| TBO | Tropospheric Biennial Oscillation |
| IIASA | International Institute For Applied Systems Analysis |
| ISF | In-Situ Sensing Facility |
| ASTER | Atmosphere-Surface Turbulent Exchange Research Facility |
| GATT | General Agreement On Tariffs And Trade |
| APET | Accident Progression Event Tree |
| PGGA | Permanent GPS Geodetic Array |