| Acronym | Meaning |
| EPR | Electon Paragmagnetic Resonance |
| SCS | Soil Conservation Service |
| NCAR/UCAR | National Center For Atmospheric Research |
| VISTA | Visual Terrain Analyzer |
| CCN | Cloud Condensation Nuclei |
| FO | Orbital Frequency |
| ONR | Office Of Naval Research |
| TUTT | Tropical Upper-tropospheric Trough |
| ASH CAN | Project Ash Can |
| PAC | Polar Atmospheric Chemistry |