| Acronym | Meaning |
| PPP | Parallelizing PreProcessor |
| AREAL | Atmospheric Research And Exposure Assessment Lab |
| ANL-W | Argonne National Laboratory-West |
| AID | Agency For International Development |
| DCAR | Data Collection Analysis Request |
| FRC | Front Range Consortium |
| NORDA | Naval Ocean Research & Development Activity |
| BE | Best Estimate |
| ETA | A Subsidiary Of Control Data Corporation That Manufactures Supercomputers |
| FS | Flight Segment |