| Acronym | Meaning |
 | AC | Advisory Circular/committee |
| JCP/ PO | Joint Climate Program/Projects Office |
| RAS | Royal Astronomical Society |
| BBC | British Broadcasting Corporation |
| OAS | Organization Of American States |
| BPSG | Budget Planning And Systems Group |
| ICO | Initial Operating Capability |
| IRAS | Infrared Astronomical Satellite |
| PAR | Photosynthetically Active Radiation |
| PAGES | Past Global Changes |
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