| Acronym | Meaning |
| C | Centigrade |
| HRIR | High Resolution Infrared Radiometer |
| ABI | Advanced Baseline Imager |
| ERBS | Earth Radiation Budget Satellite |
| TOVS | TIROS Operational Vertical Sounder |
| CRAS | CIMSS Regional Assimilation System |
| IMAPP | International MODIS/AIRS Processing Package |
| VLF | Very Low Frequency |
| PIFTS | Planetary Imaging Fourier Transform Spectrometer |
| HIRIS | HIgh-Resolution Imaging Spectrometer (EOS) |