| Acronym | Meaning |
| AU | Astronomical Unit |
| DXS | Diffuse X-ray Spectrometer |
| JSC | Johnson Space Center (NASA |
| ESMR | Electrically Scanning Microwave Radiometer |
| ASTER | Advanced Spaceborne Thermal Emission And Reflection Radiometer (EOS) |
| CH4 | Methane |
| POES | Polar Operational Environmental Satellite |
| AERI | Atmospheric Emitted Radiance Interferometer |
| SBUV | Solar Backscatter UltraViolet Radiometer (EOS) |
| K | Kilo |