| Acronym | Meaning |
| CCAA | Canadian Clean Air Act |
| TGB | Trace Gas Biogeochemistry Section |
| IFEOS | International Forum On Earth Observations Using Space Station Elements |
| SQ | Solar Quiet |
| RFQ | Request For Quote |
| IASP | International Atmospheric Surveillance Program |
| AO | Arctic Oscillation |
| CCM1 | Community Climate Model 1 |
| (ES) | Sporadic E |
| TCAS-II | Traffic Alert And Collision Avoidance System |