| Acronym | Meaning |
| HIS | High-resolution Interferometer Sounder |
| JPL | Jet Propulsion Laboratory |
| CERES | Clouds And The Earth's Radiant Energy System (EOS) |
| MODIS | MODerate-resolution Imaging Spectroradiometer (EOS) |
| ESSP | Earth System Science Pathfinder Mission (ESSP) |
| AERI | Atmospheric Emitted Radiance Interferometer |
| ITS | Interferometer Thermal Sounder (HIS) |
| ERBE | Earth Radiation Budget Experiment |
| SSU | Stratospheric Sounding Unit (TOVS) |
| KB/S | Kilobits Per Second |