| Acronym | Meaning |
| EOSDIS | Earth Observing System Data And Information System |
| ACRIM | Active Cavity Radiometer Irradiance Monitor (EOS) |
| NPOESS | National Polar-orbiting Operational Environmental Satellite System |
| TIROS | Television InfraRed Observation Satellite (POES) |
| ER-2 | Earth Resources (plane) |
| BIBEX | Biomass Burning Experiment |
| K | Kilo |
| XBSS | X-ray Background Survey Spectrometer |
| TMR | TOPEX Microwave Radiometer (EOS) |
| EUMETSAT | EUropean Organization For The Exploitation Of METeorological SATellites |