| Acronym | Meaning |
| AURA | Association Of Universities For Research In Astronomy |
| MSG | Meteosat Second Generation |
| H2O | Water (vapor) |
| HIMSS | HIgh-resolution Microwave Spectrometer Sounder |
| GPS | Global Positioning System |
| HIRDLS | HIgh-Resolution Dynamics Limb Sounder (EOS) |
| SBUV | Solar Backscatter UltraViolet Radiometer (EOS) |
| CFC | ChloroFluoroCarbon |
| EROS | Earth Resources Observing System |
| ABI | Advanced Baseline Imager |