| Acronym | Meaning |
 | APC | Ammonium Perchlorate |
| PCWG | Polar Climate Working Group |
| GEO | Geosciences Directorate |
| ICWG | International Coordinating Working Group |
| EH | Oxidation Potential |
| APL | Applied Physics Laboratory |
| RDSG | Research Data Support Group |
| ATDRSS | Advanced TDRSS |
| UNEP | United Nations Environment Programme |
| ATC | Air Traffic Control |
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