| Acronym | Meaning |
 | NASN | National Air Sampling Network |
| TGMA | Task Group Of Metal Accumulation |
| MEBS | Medium Energy Backscattering Spectrometry |
| DSCF | Direct Self-consistent Field |
| RIA | Regulatory Impact Analysis |
| PSXD | Position Sensitive X-ray Detector |
| CELFA | Composition Evaluation By Lattice Fringe Analysis |
| BOM | Bond Orbital Model |
| BABB | Back Arc Basin Basalt |
| IRI | International Reference Ionosphere |
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