| Acronym | Meaning |
 | NTISS | National Telecommunications And Information Systems Security |
| A/D | Analog-to-digital |
| NAO | North American Oscillation |
| ARC | Applied Research Corporation |
| IMF | Interplanetary Magnetic Field |
| SPECMAP | Spectral Mapping |
| NCOM | NCAR CSM Ocean Model |
| UTC | United Technology Center |
| UNICOS | Unix Cray Operating System |
| LRE | Latest Revised Estimate |
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