| Acronym | Meaning |
| XBSS | X-ray Background Survey Spectrometer |
| EOS | Earth Observing System |
| AC | Alternating Current |
| HST | Hubble Space Telescope |
| ESMR | Electrically Scanning Microwave Radiometer |
| GASP | GOES Aerosol Smoke Product |
| ENSO | El Ni?o/Southern Oscillation |
| TES | Tropospheric Emission Spectrometer (EOS) |
| PPM | Part Per Million |
| CONUS | CONtinental (or CONterminus) United States |