| Acronym | Meaning |
| HIRIS | HIgh-Resolution Imaging Spectrometer (EOS) |
| HIRS | High-resolution Infrared Radiation Sounder |
| HSRL | High Spectral Resolution Lidar |
| GMT | Greenwich Mean Time (repl. By UTC) |
| GAC | Global Area Coverage |
| CRIS | Cross-track Infrared Sounder |
| IES | Institute For Environmental Studies (UW) |
| LED | Light Emitting Diode |
| SHARP | Summer High School Apprenticeship Research Program (NASA) |
| HIS | High-resolution Interferometer Sounder |