| Acronym | Meaning |
 | EPA | Environmental Protection Agency (U.S.) |
| EPS | European Polar Satellite |
| ER-2 | Earth Resources (plane) |
| ERBE | Earth Radiation Budget Experiment |
| ERBS | Earth Radiation Budget Satellite |
| EROS | Earth Resources Observing System |
| ERS | ESA Remote Sensing Satellite |
| ERSC | Environmental Remote Sensing Center (IES) |
| ESE | Earth Science Enterprise (NASA) |
| ESMR | Electrically Scanning Microwave Radiometer |
| ESOC | European Satellite Operations Center |
| ESSA | Environmental Science Services Administration (preceded NOAA) |
| ESSP | Earth System Science Pathfinder Mission (ESSP) |
| EUMETSAT | EUropean Organization For The Exploitation Of METeorological SATellites |
| FLAMBE | Fire Locating And Monitoring Of Burning Emissions |
| FSL | Forecast Systems Laboratory (a NOAA ERL) |
| FTS | Fourier Transform Spectrometer (HIS |
| GAC | Global Area Coverage |
| GARS | GOES Archive And Retrieval System |
| GASP | GOES Aerosol Smoke Product |
| GEOSAT | GEOdetic SATellite |
| GEWEX | Global Energy And Water Cycle EXperiment (WCRP) |
| GIFTS | Geosynchronous Imaging Fourier Transform Spectrometer |
| GLOBE | Global Learning And Observations To Benefit The Environment |
| GMS | Geostationary Meteorological Satellite |
| GMT | Greenwich Mean Time (repl. By UTC) |
| GOES | Geostationary Operational Environmental Satellite |
| GPS | Global Positioning System |
| H2O | Water (vapor) |
| HIMSS | HIgh-resolution Microwave Spectrometer Sounder |
| HIRDLS | HIgh-Resolution Dynamics Limb Sounder (EOS) |
| HIRES | HIgh RESolution |
| HIRIS | HIgh-Resolution Imaging Spectrometer (EOS) |
| HIRS | High-resolution Infrared Radiation Sounder |
| HIS | High-resolution Interferometer Sounder |
| HRIR | High Resolution Infrared Radiometer |
| HSB | Humidity Sounder For Brazil |
| HSRL | High Spectral Resolution Lidar |
| HST | Hubble Space Telescope |
| HZ | Hertz |
| IES | Institute For Environmental Studies (UW) |
| IMAPP | International MODIS/AIRS Processing Package |
| IMG | Interferometric Monitor For Greenhouse Gases |
| IRIS | Infrared Radiation Interferometer Spectrometer (1960s) |
| ITOS | Improved Television And Infrared Observation Satellite (1970s) |
| ITS | Interferometer Thermal Sounder (HIS) |
| JPL | Jet Propulsion Laboratory |
| JSC | Johnson Space Center (NASA |
| K | Kilo |
| KB/S | Kilobits Per Second |
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