| Acronym | Meaning |
 | APE | Action Plan Element |
| IUPAP | International Union Of Pure And Applied Physics |
| CAA | Clean Air Act |
| PEM | Pacific Exploratory Measurements |
| BASIS | Battelle Automated Search Information System |
| AGGG | Advisory Group On Greenhouse Gases |
| POC | Project Operations Center |
| AMS | Accelerator Mass Spectrometer |
| CDR | Critical Design Review |
| SSAI | Science Systems Applications Incorporated |
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