| Acronym | Meaning |
 | HRIR | High Resolution Infrared Radiometer |
| EPA | Environmental Protection Agency (U.S.) |
| H2O | Water (vapor) |
| CRIS | Cross-track Infrared Sounder |
| VISIT | Virtual Institute For Satellite Integration Training (NWS) |
| ABS | Advanced Baseline Sounder |
| S-HIS | Scanning High Resolution Interferometer Sounder |
| NOAASIS | NOAA Satellite Information System |
| HIRS | High-resolution Infrared Radiation Sounder |
| APP | AVHRR Polar Pathfinder |
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