| Acronym | Meaning |
| ITOS | Improved Television And Infrared Observation Satellite (1970s) |
| C | Centigrade |
| AO&SS | Atmospheric |
| TOVS | TIROS Operational Vertical Sounder |
| SWAMP | Science Working Group For The AM Platform (EOS) |
| HZ | Hertz |
| ENSO | El Ni?o/Southern Oscillation |
| HSRL | High Spectral Resolution Lidar |
| PPM | Part Per Million |
| TES | Tropospheric Emission Spectrometer (EOS) |