| Acronym | Meaning |
| EM | Engineering Model |
| NSPI | National Society For Programmed Instruction |
| NOAASIS | NOAA Satellite Information System |
| CCL | Convective Condensation Level |
| AFOE | Advanced Fiber Optic Echelle |
| APIP | Aircraft Produced Ice Particles |
| NCC | National Climate Center |
| THIR | Temperature And Humidity Infrared Radiometer |
| AEEN | Agence Europeenne Pour L'Energie Nucleaire |
| ESID | EOSDIS Systems Interface Document |