| Acronym | Meaning |
| K | Kilo |
| SDS | Satellite Data Services |
| VLF | Very Low Frequency |
| APP | AVHRR Polar Pathfinder |
| GAC | Global Area Coverage |
| NCEP | National Centers For Environmental Prediction (form. NMC; NWS Center) |
| OSSE | Office Of Space Science Education (SSEC) |
| ADEOS | ADvanced Earth Observing Satellite (Japan) |
| SWAMP | Science Working Group For The AM Platform (EOS) |
| IRIS | Infrared Radiation Interferometer Spectrometer (1960s) |