| AP history | AP / industrial rev. | AP / auto | AP meas. |
| 6 gas AP classes | particle sources | particle sizes | sinks / nat. sources |
| receptors | AP scales | primary | secondary |
| atmos composition | atmos layers | ambient levels | indoor / outdoor |
| ambient cycles | anthrop. sources | combustion | mobile sources |
| stationary sources | emission inventory | AQ objectives | averaging time |
| NAAQO | Pulpmill sources | Oil refinery sources | health impacts |
| AP control | control efficiency | control methods | BACT |
| filters | ESP | impaction | cyclones |
| inertial | scrubbers | adsorption | absorption |
| condensation | conversion | auto controls | cyclone |
| AP health effects | AP veg impacts | epidemiology | toxicology |
| clinical studies | AP economics | materials effects | oxidation |
| photochemical | air sampling | active sampling | passive / static |
| sampler charact. | continuous | gas sampling | particulate samp. |
| diffusion | permeation | AQ analysis | NDIR |
| chemiluminescence | HI-VOL | TEOM | transport |
| transform | disperse | ventilation | stagnation |
| stability | turbidity | sedimentation | transformation |
| dry deposition | wet deposition | washout | rainout |
| mixing height | stability | plume stretching | plume types |
| turbulence | GPM | Briggs | σy, σz |
| stability class | puff models | box models | gradient trans. mod. |
| trajectory models | mesoscale / LPDM | complex terrain | circulations |
| episode mgmt | dispersion instr. | plume rise | downwash |
| regulatory control | precautionary prin. | prevention | polluter pay |
| command & control | economic policies | land-use | education |
| laws | regulations | subsidies | remote sensing |
| Canada-wide stndrds | LIDAR | speciation | Spec Waste Reg |
| Env Mgmt Act | Health Act | Zoning | Airshed |
| Ecosystem approach | Airshed planning |