| Acronym | Meaning |
 | PCM | Parallel Climate Model |
| PFU | Proto Flight Unit |
| UT | Universal Time |
| ARC | Antarctic Research Center |
| SVG | Scientific Visualization Group |
| LARC | Langley Research Center |
| AC | Alternating Current |
| ACNFS | Advisory Committee On Nuclear Facility Safety |
| ACTS | Atmospheric Chemistry Of Transient Species |
| NATCA | National Air Traffic Control Administration |
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