| Acronym | Meaning |
| HIRIS | HIgh-Resolution Imaging Spectrometer (EOS) |
| DCS | Data Collection System (NOAA Polar Orbiting Satellites) |
| NESDIS | National Environmental Satellite |
| SBUV | Solar Backscatter UltraViolet Radiometer (EOS) |
| UV | UltraViolet |
| AOT | Aerosol Optical Thickness |
| HIRDLS | HIgh-Resolution Dynamics Limb Sounder (EOS) |
| ECMWF | European Centre For Medium-range Weather Forecasts |
| GPS | Global Positioning System |
| GEOSAT | GEOdetic SATellite |