| Acronym | Meaning |
 | MERIS | Medium Resolution Imaging Spectrometer |
| PSC | Geomagnetic Pulsation |
| AFASE | Association For Applied Solar Energy |
| USGCRP | United States Global Change Research Program |
| SEL | Space Environment Laboratory |
| VRMS OR VRMS | Volt Root Mean Square |
| IBM | International Business Machines Corporation |
| THERMEX | Thermal Wave Experiment |
| APE | Action Plan Element |
| NEXUS | Navaid-based Upper- Air Sounding System |
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