| Acronym | Meaning |
| PEN | Personal Electronic Notebook |
| PMIRRAS | Polarization Modulation Infrared Reflection Absorption Spectroscopy |
| SRB | Sulfate Reducing Bacteria |
| CEES | Committee On Earth And Environment Sciences (US) |
| APM | Atom Probe Microanalysis |
| IBR | Infectious Bovine Rhinotracheitis |
| PAR | Photosynthetically Active Radiation |
| PSCF | Potential Source Contribution Function |
| ACP | Automatic Correlation Partitioning |
| ADF | Acid Detergent Fiber |