| Acronym | Meaning |
| MERIT | MERIT |
| IPOMS | International Polar-Orbiting Meteorological Satellite Group |
| AAS | American Astronomical Society |
| PMIP | Paleoclimate Modeling Intercomparison Project |
| WMS | World Magnetic Survey |
| GCP | Global Chemistry Program |
| AID | Agency For International Development |
| GCM | General Circulation Model |
| WG/MDM | Working Group For Meteorological Data Management |
| TES | Transequatorial Scatter |