| Acronym | Meaning |
 | NPOESS | National Polar-orbiting Operational Environmental Satellite System |
| AERI | Atmospheric Emitted Radiance Interferometer |
| EDC | EROS Data Center |
| METEOSAT | METEOrological SATellite (European) |
| HZ | Hertz |
| EOS | Earth Observing System |
| LASER | Light Amplification By Stimulated Emission Of Radiation |
| MSLP | MSL Pressure |
| JSC | Johnson Space Center (NASA |
| GPS | Global Positioning System |
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