| Acronym | Meaning |
 | APE | Action Plan Element |
| FLMPA | Federal Land Management Policy Act |
| S/TM | Stratospheric/tropospheric Measurements |
| MDS | Minimum Detectable Signal |
| LLP | Lightning Location And Protection |
| M&V | Magnetism & Volcanoes |
| NESC | National Energy Software Corporation |
| TAP | Diffusion Transport Models |
| UID | User Identification |
| PHIGS | Portable Hierarchical Image And Graphic Standard |
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