| Acronym | Meaning |
| GSFC | Goddard Space Flight Center (of NOAA |
| GRIMM | Global/Regional Interhemispheric Mercury Model |
| MST | Multiple Scattering Theory |
| GEP | Good Engineering Practice |
| CHA | Chemical Hamiltonian Approach |
| PAP | Pancreatitis-associated Protein |
| ESIC | Earth Science Information Center |
| ACES | Annual Cycle Energy Storage System |
| RACM | Reasonably Available Control Measures |
| AAMOM | An Approximate Molecular Orbital Method |