| Acronym | Meaning |
 | IGBP | International Geosphere-Biosphere Program |
| PPTV | Parts Per Trillion (by Volume) |
| JPL | Jet Propulsion Laboratory |
| NATCA | National Air Traffic Control Administration |
| MFEM | Magnetic Field Explorer Mission |
| EES | Earth & Environmental Science |
| TECC | Tropospheric Effects Of Cloud Chemistry Program |
| NETCDF | Network Common Data Form |
| M | Milli |
| ITM | Ionosphere-Thermosphere-Mesosphere |
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