| Acronym | Meaning |
| DCO | Delayed Compliance Order |
| NICI | Negative Ion Chemical Ionization |
| ABLE | Activity Balance Line Evaluation |
| QPF | Quantitative Prediction Of Precipitation |
| TRACE | Trace Remote Atmospheric Chemical Evaluation |
| GCP | GEWEX Continental-Scale Project |
| CDR | Circular Depolarization Ratio |
| MIESR | Matrix Isolation/Electron Spin Resonance |
| GSA | General Services Administration |
| ITCZ | Intertropical Convergence Zone |