| Acronym | Meaning |
| WSO | Weather Service Office |
| SOLSTICE | Solar/Stellar Intercomparison Experiment |
| EO-ICWG | Earth Observation International Coordination Working Group |
| NSDA | National Space Development Agency |
| ADM | Action Description Memorandum |
| AMRIR | Advanced Medium Resolution Imaging Radiometer |
| LBA/TRMM | Large Scale Biosphere-Atmosphere Experiment In Amazonia/Tropical Rainfall Measuring Mission |
| PRECP | Program On Nonlinearity Of Acid Precipitation Process |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| RO# | Rossby Number |