| Acronym | Meaning |
| ISCAT | Investigation Of Sulfur Chemistry In Antarctic Troposphere |
| SSU | Stratospheric Sounding Unit |
| HF | High Frequency |
| RAND OR RAND | Research And Development |
| RPS | Routine Product Set |
| RAM | Random Access Memory |
| ACC | Antarctic Circumpolar Current |
| NEIC | National Earthquake Information Center |
| ESJWG | Earth Science Joint Working Group |
| AC | Advisory Circular/committee |