| Acronym | Meaning |
| IWC | Ice Water Content |
| NROSS | Naval Remote Ocean Sensing System |
| AMTEX | Air Mass Transformation Experiment |
| URSI | International Union Of Radio Science |
| ANSS | American Nature Study Society |
| PETA | People For The Ethical Treatment Of Animals |
| IGB | International Geophysical Bulletin |
| O AND M | Operations And Maintenance |
| AP | Amparo |
| AO | Announcement Of Oppurtunity |