| Acronym | Meaning |
| PCO | Polar Cap Observatory |
| PDL | Program Design Language |
| SSD | Cray's Solid-state Storage Device On The CRAY X-MP/48 Computer |
| GWEN | Ground Wave Emergency Network |
| AIDA | Archive 1 Data Analyzer |
| JMOF | Joint Meteorological Observing Facility |
| SEAD | Secretary Of Energy Advisory Board |
| F77 | FORTRAN77 |
| IPOC | International Partner Operations Center |
| GOS | Geomagnetic Observing System |