| Acronym | Meaning |
| MHZ | MegaHertz |
| ESSA | Environmental Science Services Administration (preceded NOAA) |
| UV | UltraViolet |
| PPM | Part Per Million |
| VLF | Very Low Frequency |
| MSLP | MSL Pressure |
| CONUS | CONtinental (or CONterminus) United States |
| GOES | Geostationary Operational Environmental Satellite |
| MISR | Multi-angle Imaging Spectro-Radiometer (EOS) |
| NPOESS | National Polar-orbiting Operational Environmental Satellite System |