| Acronym | Meaning |
 | ESSA | Environmental Science Services Administration (preceded NOAA) |
| ESE | Earth Science Enterprise (NASA) |
| NESDIS | National Environmental Satellite |
| MISR | Multi-angle Imaging Spectro-Radiometer (EOS) |
| K | Kilo |
| COMSAT | COMmunications SATellite |
| APP | AVHRR Polar Pathfinder |
| STEP | Satellite Technology Education Program (WSGC) |
| TES | Tropospheric Emission Spectrometer (EOS) |
| PPM | Part Per Million |
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