| 2D | two dimensional |
| 3D | three dimensional |
| AIRS | Atmospheric Infrared Sounder |
| AMSR | Advanced Microwave Scanning Radiometer |
| AMSU-A | Advanced Microwave Sounding Unit |
| AMV | atmospheric motion vector |
| AOS | Atmosphere Observing System |
| ASI | Italian Space Agency |
| ASTER | Advanced Spaceborne Thermal Emission and Reflection Radiometer |
| CERES | Clouds and the Earth’s Radiant Energy System |
| CESAS | Committee on Earth Science and Applications from Space |
| CLARREO | Climate Absolute Radiance and Refractivity Observatory |
| COWVR | Compact Ocean Wind Vector Radiometer |
| CPR | Cloud Profiling Radar |
| DIAL | differential absorption lidar |
| DO | Designated Observable |
| ECOSTRESS | Ecosystem Spaceborne Thermal Radiometer Experiment on Space Station |
| EMIT | Earth Surface Mineral Dust Source Investigation |
| EOS | Earth Observing System |
| ERB | Earth’s radiation budget |
| ESA | European Space Agency |
| ESAS | Earth science and applications from space |
| ESD | Earth Science Division |
| ESSP | Earth System Science Pathfinder Program |
| EUMETSAT | European Organisation for the Exploitation of Meteorological Satellites |
| EV | Earth Venture |
| EV-C | Earth Venture Continuity |
| EV-I | Earth Venture Instrument |
| EV-M | Earth Venture Mission |
| EV-S | Earth Venture Suborbital |
| FY | fiscal year |
| GCOM-W1 | Global Change Observation Mission-Water |
| GEDI | Global Ecosystem Dynamics Investigation |
| GEO | geostationary Earth orbit |
| GeoCARB | Geostationary Carbon Cycle observatory |
| GHG | greenhouse gas |
| GLIMR | Geostationary Littoral Imaging and Monitoring Radiometer |
| GNSS-R | Global Navigation Satellite System Reflectometry |
| GOES | Geostationary Operational Environmental Satellites |
| GOSAT | Greenhouse gases Observing SATellite |
| GPM | Global Precipitation Measurement |
| GPS | Global Positioning System |
| GRACE | Gravity Recovery and Climate Experiment |
| GRACE FO GSD | GRACE-Follow-On |
| HIRDLS | High Resolution Dynamics Limb Sounder |
| ICESat-2 | Ice, Cloud and land Elevation Satellite |
| IIR | Imaging Infrared Radiometer |
| InSAR | Interferometric Synthetic Aperture Radar |
| IR | infrared |
| ISAM | In-Space Servicing, Assembly, and Manufacturing |
| ISRO | Indian Space Research Organization |
| ISS | International Space Station |
| JAXA | Japan Aerospace Exploration Agency |
| LAI | leaf area index |
| LEO | low Earth orbit |
| MISR | Multi-angle Imaging SpectroRadiometer |
| MLS | Microwave Limb Sounder |
| MODIS | Moderate Resolution Imaging Spectroradiometer |
| NASA | National Aeronautics and Space Administration |
| NIR | near infrared |
| NISAR | NASA-ISRO SAR |
| NOAA | National Oceanic and Atmospheric Administration |
| NWP | numerical weather prediction |
| OCO-2 | Orbiting Carbon Observatory 2 |
| OCO-3 | Orbiting Carbon Observatory 3 |
| OMI | Ozone Monitoring Instrument |
| PBL | Planetary Boundary Layer |
| PRISMA | Hyperspectral Precursor of the Application Mission |
| QuikScat | Quick Scatterometer |
| SAR | Synthetic Aperture Radar |
| SBG | Surface Biology and Geology |
| SmallSat | Small Satellite |
| SMMR | Scanning Multi-channel Microwave Radiometer |
| SNOOPI | Signals of Opportunity P-band Investigation |
| SSO | Sun-synchronous orbit |
| STV | surface topography and vegetation |
| SWE | snow water equivalent |
| SWIR | shortwave infrared |
| SWOT | Surface Water and Ocean Topography |
| TEMPO | Tropospheric Emissions: Monitoring of Pollutants |
| TES | Tropospheric Emission Spectrometer |
| TIR | thermal infrared |
| TRMM | Tropical Rainfall Measurement Mission |
| TSIS | Total and Spectral Solar Irradiance Sensor |
| USGS | U.S. Geological Survey |
| UV | ultraviolet |
| Vis | visible |
| VISSR | Visible and Infrared Spin-Scan Radiometer |
| VNIR | visible and near infrared |
| VSWIR | visible and short-wave infrared |
| WaCM | Winds and Currents Mission |