| Acronym | Meaning |
| MSS | Multi-Spectral Scanner |
| ABS | Advanced Baseline Sounder |
| GEWEX | Global Energy And Water Cycle EXperiment (WCRP) |
| AVIRIS | Airborne Visible InfraRed Imaging Spectrometer (JPL) |
| CRAS | CIMSS Regional Assimilation System |
| TOS | TIROS Operational Satellite |
| IRIS | Infrared Radiation Interferometer Spectrometer (1960s) |
| DXS | Diffuse X-ray Spectrometer |
| ERSC | Environmental Remote Sensing Center (IES) |
| K | Kilo |