| Acronym | Meaning |
| AIRS | Atmospheric InfraRed Sounder (EOS) |
| APP | AVHRR Polar Pathfinder |
| MSS | Multi-Spectral Scanner |
| ECMWF | European Centre For Medium-range Weather Forecasts |
| EOS | Earth Observing System |
| M | Meter(s) |
| MB OR MB | Megabytes (or Megabits) |
| SBUV | Solar Backscatter UltraViolet Radiometer (EOS) |
| MAMS | Multispectral Atmospheric Mapping Sensor |
| ITS | Interferometer Thermal Sounder (HIS) |