| Acronym | Meaning |
 | NASA | National Aeronautics And Space Administration |
| JGR | Journal Of Geophysical Research |
| CASI | Canadian Aerospace Institute |
| SIGMET | Significant Meteorological Information |
| FTS | Federal Telecommunications System |
| EESI | Environment & Energy Study Institute |
| SAR | Subcommittee On Atmospheric Research |
| 4DDD | Four-Dimensional Data Assimilation |
| LL | Lincoln Laboratories |
| RT/PC | RISC Technology/Personal Computer |
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