| Acronym | Meaning |
| BU | Bargaining Unit |
| GTCSM | Global Tropospheric Chemistry Systems Model |
| BP | Boundary Profile |
| ROC | Regional Observational Cooperative |
| NOAANET | NOAA Network |
| MRF | Medium-Range Forecast |
| GRM | Geopotential Research Mission |
| DOE/HQ | Department Of Energy Headquarters |
| BOF | Birds Of A Feather |
| PMIP | Paleoclimate Modeling Intercomparison Project |