| Acronym | Meaning |
| PCAS | Passive Cavity Aerosol Spectrometer |
| TDM | Time Division Multiplex |
| DSA | Directory System Agent |
| CARP | Colorado-Amudarya Rivers Project |
| AP | Action Plan |
| GAW | Global Atmospheric Watch |
| ARWG | Atmospheric Radiation Working Group |
| PMEL | Pacific Marine Environment Laboratory |
| POSIX | Portable Operating System Interface For Computer Environments |
| NWP | Numerical Weather Prediction |