| Acronym | Meaning |
 | PCAS | Passive Cavity Aerosol Spectrometer |
| TDM | Three-dimensional Time-varying Mesoscale Model |
| SCATT | Scatterometer |
| IMF | Interplanetary Magnetic Field |
| ANI | Authorized Nuclear Inspector |
| EG&G | Inc. |
| ACC | Abnormal Condition Control |
| SEL | Space Environment Laboratory |
| ANRHRD | Air Noise Radiation Health Research Division |
| PA | Position Angle |
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