| Acronym | Meaning |
 | STEP | Satellite Technology Education Program (WSGC) |
| APP | AVHRR Polar Pathfinder |
| MAS | MODIS Airborne Simulator |
| TES | Tropospheric Emission Spectrometer (EOS) |
| ADEOS | ADvanced Earth Observing Satellite (Japan) |
| HST | Hubble Space Telescope |
| CPC | Climate Prediction Center (NWS Center) |
| CRIS | Cross-track Infrared Sounder |
| PPM | Part Per Million |
| COMET | Cooperative Program For Operational Meteorology Education And Training (NOAA And UCAR) |
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