| Acronym | Meaning |
| PEM | Pacific Exploratory Mission |
| AA | Accountable/activity Area |
| RA# | Raleigh Number |
| LTER | Long Term Ecological Research |
| CCCMA | Canadian Centre For Climate Modeling And Analysis |
| EEC | European Economic Community |
| NCEP | National Centers For Environmental Prediction |
| FCA | Functional Configuration Audit |
| BATGE | Biosphere-Atmosphere Trace Gas Exchange In The Tropics |
| ELF | Extremely Low Frequency |