| Acronym | Meaning |
| ESSA | Environmental Science Services Administration |
| API | Axial Power Indicator |
| FIRE | First ISCCP Radiation Experiment |
| FGCMS | Fast GC / MS = Fast Gas Chromatography / Mass Spectrometry |
| DCLS | Data Collection Location System |
| DDF | Digital Data Formatter |
| DTC | Developmental Testbed Center |
| K | Potassium |
| TLS | Tunable Laser Spectroscopy |
| HVPS | High-volume Precipitation Spectrometer |