| Acronym | Meaning |
| IRIS | Infrared Radiation Interferometer Spectrometer (1960s) |
| TES | Tropospheric Emission Spectrometer (EOS) |
| AC | Alternating Current |
| DXS | Diffuse X-ray Spectrometer |
| ASPT | Advanced Satellite Products Team (NOAA/ORA) |
| UHF | Ultra High Frequency |
| MSL | Mean Sea Level |
| MSG | Meteosat Second Generation |
| MSLP | MSL Pressure |
| CCR | Center For Climatic Research (IES) |