| Acronym | Meaning |
| IRCAT | Infrared Radiometer To Detect (CAT) Horizontal Temperature Gradients |
| ETIP | Experimental Technology Incentive Program |
| R | Roentger |
| NGS | National Geodetic Survey |
| TRW | Thundershowers |
| IOC | Initial Operating Capability |
| HIRS | High-resolution Infrared Radiation Sounder |
| AMI-2 | Active Microwave Instrument 2 |
| ATOG | Abnormal Test Procedure Operator Guidelines |
| GAGE | Global Atmospheric Gases Experiment |