| Acronym | Meaning |
| PCRGA | Precipitation Chemistry |
| UWGB | University Of Wisconsin At Green Bay |
| SPL | SLATEC Plotting Library |
| PGGA | Permanent GPS Geodetic Array |
| BXA | Bureau Of Export Administration |
| EHF | Extremely High Frequency |
| TERAFLOPS | Trillions Of Arithmetic Operations Per Second |
| CASAC | Clean Air Scientific Advisory Committee |
| DED | Data Element Directory |
| NCSA | National Center For Supercomputing Applications |