| Acronym | Meaning |
| ETA | A Hydrostatic Model That Employs The Eta Vertical Coordinate |
| DART | Data Assimilation Research Testbed |
| NEPA | National Environmental Policy Act |
| EP | Electrical Power |
| MERIS | Medium Resolution Imaging Spectrometer |
| NSO | National Solar Observatory |
| URSI | International Union Of Radio Science |
| PV | Potential Vorticity |
| ANL-W | Argonne National Laboratory-West |
| EAG | Exposure Assessment Group |