| Acronym | Meaning |
| WWW | World Weather Watch |
| LHS | Left-hand Side |
| FORTRAN 77 | N/A |
| EXPRESSO | EXPeriment For REgional Sources And Sinks Of Oxidants |
| RTVS | Real-Time Verification System |
| GRGC | Geologic Record Of Global Change |
| JCP/ PO | Joint Climate Program/Projects Office |
| RPM | Radiation And Particles Measurement |
| ABTRES | Abatement & Residual Forecasting Model |
| EMR | Electronic Mail Registration |