| Acronym | Meaning |
 | HCN | Historical Climatology Network |
| UMASS | University Of Massachusetts |
| PUP | Principle User Position Workstation |
| AMOS | Automatic Meteorological Observation System |
| AIX | Advanced Interactive Executive |
| AOC | Area Of Contamination |
| MOS | Marine Observation Satellite |
| AP | Administrative Procedure |
| USN | United States Navy |
| ESSL | Earth & Sun Systems Laboratory (formerly ATD) |
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