| Acronym | Meaning |
| UPA | Unitary-pole Approximation |
| POPCORN | Photo-Oxidant Formation By Plant Emitted Compds. And OH Radicals In North-Eastern Germany |
| CARS | Coherent Anti-Stokes Raman Spectroscopy |
| GNO | Geminal Natural Orbital |
| MRM | Multiple Reaction Monitoring |
| BGC | Biogeochemical Cycling |
| NYSDEC | New York State Department Of Environmental Conservation |
| RELAX | Refrigerator Enhanced Laser Analyzer For Xenon |
| NCDC | National Climatic Data Center |
| HEDS | Human Exploration And Development Of Space |