| Acronym | Meaning |
| UTC | Universal Time Coordinate Or Coordinated Universal Time |
| LCL | Lifting Consdensation Level |
| AGARD | Advisory Group For Aeronautical Research And Development |
| CDIAC | Carbon Dioxide Information Analysis Center |
| ADP | Automatic Data Processing |
| F77 | FORTRAN77 |
| AMR | Adaptive Mesh Refinement |
| FFS | Flight Facilities Survey |
| TAP | Transportation Alternatives Program |
| BCD | Binary-coded Decimal |