| Acronym | Meaning |
| AWWA | American Waterworks Association |
| MCA | Manufacturing Chemists Association |
| AER | AWIPS Forecast Preparation System |
| APD | Advanced Planning Division |
| PGGA | Permanent GPS Geodetic Array |
| TCZ | Tropical Cloud Zone |
| AIRS | Advanced Infared Studies |
| ARIMP | Atmospheric Radiation Investigation And Measurements Project |
| CCID | Confidential Chemicals Identification System |
| MCS | Mesoscale Convective System |