| Acronym | Meaning |
| GNU | GNU's Not UNIX (a Recursive Acronym) |
| APET | Accident Progression Event Tree |
| WATOX | Western Atlantic Ocean Experiment |
| DTG | Data Time Group |
| IWGGCDM | International Working Group On Global Change And Data Management |
| IPC | Instrument Processing Center |
| AIRS | Atmospheric Infrared Sounder |
| IAG | International Association Of Geodesy |
| AICHE | American Institute Of Chemical Engineers |
| HIRS | High-resolution Infrared Radiation Sounder |