| Acronym | Meaning |
 | PM2.5 | Particulate Matter With Mass Median Aerodynamic Diameter Less Than 2.5 Micrometers |
| OTB | Operations Training Branch |
| DOPLID | Doppler Lidar |
| DCG | Derived Air Concentration Guide For Uncontrolled Areas |
| GCOS | Global Climate Observing System |
| BER | Bit Error Rate |
| IRCTR | International Research Centre For Telecommunication-transmission And RADAR |
| AMBIENS | Atmospheric Mass Balance Of Industrially Emitted & Natural Sulfur |
| PIXE | Proton Induced X-ray Emission |
| CBB | Contract Budget Baseline |
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