| Acronym | Meaning |
 | MSIS | Mass Spectrometer And Incoherent Scatter |
| NAE | National Aeronautical Establishment |
| MRF | Medium-Range Forecast |
| IWC | Ice Water Content |
| UARC | Upper Atmosphere Research Corporation |
| CASH | Commercial Aviation Sensing Of Humidity |
| DCS | Direct Connect Service |
| THORPEX | The Observing System Research And Predictability Experiment |
| FPA | Focal Plane Assembly |
| JETDLAG | Part Of EUROTRAC |
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