| Acronym | Meaning |
 | DD+ | Domestic Data Plus |
| AORD | Astronaut Operations Requirements Document |
| GCI | Global Change Institute |
| AES | Atomic Emission Spectroscopy |
| UID | User Identification |
| RAWPG | Regional Aviation Weather Products Generator |
| CAI | Controlled Air Incinerator |
| AOG | Augmented Offgas |
| EM | Electromagnetic Conductivity |
| MSU | Microwave Sounding Unit |
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