| Acronym | Meaning |
| ECMWF | European Centre For Medium-range Weather Forecasts |
| EPS | European Polar Satellite |
| IRIS | Infrared Radiation Interferometer Spectrometer (1960s) |
| TOVS | TIROS Operational Vertical Sounder |
| MSL | Mean Sea Level |
| ENSO | El Ni?o/Southern Oscillation |
| FLAMBE | Fire Locating And Monitoring Of Burning Emissions |
| CSBT | Clear-Sky Brightness Temperature |
| HIRS | High-resolution Infrared Radiation Sounder |
| CH4 | Methane |