| Acronym | Meaning |
| PT2F | Second-order Perturbation Theory (with) Fock (matrix) |
| LCCO | Linear Combination Of Cellular Orbital |
| DSITMS | Direct Sampling Ion Trap Mass Spectrometry |
| CTD | Charge Transfer Device (optical Spectroscopic Detector) |
| SPES | Step Potential Electrochemical Spectroscopy |
| URA | Universities Research Association |
| ESCOMPTE | (Experience Sur Site Pour Contraindre Les Modeles De Pollution Atmospherique Et De Transport D'emissions) |
| CASPT2 | Complete Active Space With Second-order Perturbation Theory |
| EWMA | Exponentially Weighted Moving Average |
| UARP | Upper Atmospheric Research Program |