| Acronym | Meaning |
| C | Centigrade |
| MHZ | MegaHertz |
| METEOSAT | METEOrological SATellite (European) |
| HIRES | HIgh RESolution |
| IRIS | Infrared Radiation Interferometer Spectrometer (1960s) |
| LIDAR | LIght Detection And Ranging |
| OSO | Orbiting Solar Observatory |
| M | Meter(s) |
| EOSDIS | Earth Observing System Data And Information System |
| ATOVS | Advanced TIROS Operational Vertical Sounder |