| Acronym | Meaning |
 | NASDA | National Space Development Agency (Japan) |
| MAS | MODIS Airborne Simulator |
| MISR | Multi-angle Imaging Spectro-Radiometer (EOS) |
| NPOESS | National Polar-orbiting Operational Environmental Satellite System |
| ESSA | Environmental Science Services Administration (preceded NOAA) |
| MSG | Meteosat Second Generation |
| APP | AVHRR Polar Pathfinder |
| ACRIM | Active Cavity Radiometer Irradiance Monitor (EOS) |
| CH4 | Methane |
| MSLP | MSL Pressure |
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