| Acronym | Meaning |
 | ANATEX | Across North America Tracer Experiment |
| AL | Analytical Laboratory |
| IGB | International Geophysical Bulletin |
| CCM3 | Community Climate Model Version 3 |
| M-ISWS | Illinois State Water Survey |
| AFA | American Forestry Association |
| PPO | Profiler Program Office |
| NNT | Nearest Neighbor Tool |
| KB | Kilobit(s) |
| VOR | Visual Omnirange |
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