| Acronym | Meaning |
| STAPPA | State And Territorial Air Pollution Program Administrators |
| CARIBIC | Civil Aircraft For Remote Sensing And In Situ Measurements In Troposphere And Lower Stratosphere Based On The Instrumentation |
| SOMO | Semioccupied Molecular Orbital |
| GWP | Gaussian Wave Packet |
| PPN | Peroxypropionyl Nitrate |
| LIFD | Laser-induced Fluorescence Detection |
| ANFO | Ammonium Nitrate Fuel Oil Explosive |
| NASN | National Air Sampling Network |
| NMOC | Nonmethane Organic Compound(s) |
| NEOPS | North East Oxidant And Particle Study |