| Acronym | Meaning |
| MLS | Microwave Limb Sounder (EOS) |
| UFO | Unidentified Flying Object |
| M | Meter(s) |
| HIRES | HIgh RESolution |
| ESSP | Earth System Science Pathfinder Mission (ESSP) |
| S-HIS | Scanning High Resolution Interferometer Sounder |
| ATOVS | Advanced TIROS Operational Vertical Sounder |
| HRIR | High Resolution Infrared Radiometer |
| LIDAR | LIght Detection And Ranging |
| SHARP | Summer High School Apprenticeship Research Program (NASA) |