| Acronym | Meaning |
| ORU | Orbital Replacement Unit |
| USAP | United States Antarctic Program |
| LPARL | Lockheed Palo Alto Research Laboratory |
| GCSS | GWEX Cloud Systems Studies |
| AVARS | Aircraft Vertical Accelerometer Reports |
| ECTD | Emission Control Technology Division |
| VTPR | Vertical Temperature Profile Radiometer |
| DODP | Department Of Defense Programs |
| STP | Standard Temperature And Pressure |
| IR-RAD | Infrared Radiometer |