| ACE | Advanced Composition Explorer |
| ADAPT | Air Force Data Assimilative Photospheric Flux Transport |
| AI | artificial intelligence |
| AIP | American Institute of Physics |
| AMPERE | Active Magnetosphere and Planetary Electrodynamics Response Experiment |
| AMR | adaptive mesh refinement |
| ANSWERS | Advancing National Space Weather Expertise and Research toward Societal Resilience |
| AOM | Arctic Observing Mission |
| ARC | Applied Research Challenge |
| CCMC | Community Coordinated Modeling Center |
| CCOR | Compact Coronagraph |
| CEDAR | Coupling, Energetics, and Dynamics of Atmospheric Regions |
| CIR | corotating interaction region |
| CME | coronal mass ejection |
| COE | Center of Excellence |
| COSMIC-2 | Constellation Observing System for Meteorology, Ionosphere, and Climate 2 |
| COSPAR | Committee on Space Research |
| COTS | commercial off-the-shelf |
| CSA | Canadian Space Agency |
| CuSP | CubeSat for Solar Particles |
| CV | computer vision |
| DA | data assimilation |
| DMSP | Defense Meteorological Satellite Program |
| DoD | Department of Defense |
| DSCOVR | Deep Space Climate Observatory |
| DSN | NASA’s Deep Space Network |
| Dst | disturbance storm time |
| EMP | electromagnetic pulse |
| EPP | energetic particle precipitation |
| ESA | European Space Agency |
| ESIP | Earth Science Information Partners |
| EUV | extreme ultraviolet |
| EZIE | Electrojet Zeeman Imaging Explorer |
| FAC | field-aligned current |
| FAIR | findable, accessible, interoperable, reusable |
| GDC | Geospace Dynamics Constellation |
| GEM | Geospace Environment Modeling |
| GEO | geosynchronous orbit |
| GEO/AGS | Directorate of Geosciences Division of Atmospheric and Geospace Sciences (NSF) |
| GIC | geomagnetically induced current |
| GMD | geomagnetic disturbance |
| GNSS | Global Navigation Satellite System |
| GOES | Geostationary Operational Environmental Satellite |
| Golf-NG | Global Oscillations at Low Frequency-New Generation |
| GONG | Global Oscillation Network Group |
| GPS | Global Positioning System |
| GPU | graphics processing unit |
| GTOSat | Geostationary Transfer Orbit Satellite |
| HASDM | High-Accuracy Satellite Drag Model |
| HDRL | Heliophysics Digital Resource Library (NASA) |
| HERMES | Heliophysics Environmental and Radiation Measurement Experiment Suite |
| HF | high frequency |
| HMI | Helioseismic and Magnetic Imager |
| HPD | Heliophysics Division |
| HSO | Heliophysics System Observatory |
| HSS | high-speed stream |
| ICME | interplanetary coronal mass ejection |
| IGRF | International Geomagnetic Reference Field |
| IMF | interplanetary magnetic field |
| IRIS | In Situ and Remote Ionospheric Sensing |
| ISR | incoherent scatter radar |
| ISS | International Space Station |
| ISWAT | International Space Weather Action Team |
| ITM | ionosphere–thermosphere–mesosphere |
| IWG | interagency working group |
| JEDI | Joint Effort for Data-Assimilation Integration |
| JH | joule heating |
| JHU/APL | Johns Hopkins University Applied Physics Laboratory |
| LASCO | Large Angle and Spectrometric Coronagraph Experiment |
| LEO | low Earth orbit |
| LWS | Living With a Star (NASA) |
| M2M | Moon to Mars |
| MANGO | Midlatitude Allsky-imaging Network for GeoSpace Observations |
| MEO | medium Earth orbit |
| MHD | magnetohydrodynamics |
| MIMIS | Mission to Investigate the Mesoscales in Interplanetary Space |
| ML | machine learning |
| MLT | mesosphere and lower thermosphere |
| MME | multi-model ensemble |
| MSL | Mars Science Laboratory |
| NASA | National Aeronautics and Space Administration |
| NCAR | National Center for Atmospheric Research |
| NCEI | National Centers for Environmental Information (NOAA) |
| NERC | North American Electric Reliability Corporation (NOAA) |
| NESDIS | National Environmental Satellite, Data, and Information Service |
| NOAA | National Oceanic and Atmospheric Administration |
| NSF | National Science Foundation |
| NSF/AGS | NSF Division of Atmospheric and Geospace Sciences |
| NSF/AST | NSF Division of Astronomical Sciences |
| NSTC | National Science and Technology Council |
| NSW-SAP | National Space Weather Strategy and Action Plan |
| NWS | National Weather Service |
| OADR | Open-Architecture Data Repository |
| OSE | Observing System Experiment |
| OSSE | observing system simulation experiment |
| OSTP | Office of Science and Technology Policy |
| OTHR | over-the-horizon radar |
| P&F | Pepperl & Fuchs |
| PIC | particle in cell |
| POES | Polar Operational Environmental Satellites |
| PROSWIFT | Promoting Research and Observations of Space Weather to Improve the Forecasting of Tomorrow Act |
| PUNCH | Polarimeter to Unify the Corona and Heliosphere |
| R2O2R | research to operations/operations to research |
| RAD | Radiation Assessment Detector |
| REACH | Responsive Environmental Assessment Commercially Hosted |
| RL | readiness level |
| ROI | return on investment |
| ROSES | Research Opportunities in Space and Earth Sciences |
| SBIR | Small Business Innovation Research |
| SDO | Solar Dynamics Observatory |
| SEP | solar energetic particle |
| SET4D | Space Domain Awareness Environmental Toolkit for Defense |
| SHINE | Solar, Heliospheric, and Interplanetary Environment |
| SIR | stream interaction region |
| SNIPE | Small Scale Magnespheric and Ionospheric Plasma Experiment |
| SOARS | Significant Opportunities in Atmospheric Research and Science |
| SOHO | Solar and Heliospheric Observatory |
| SPASE | Space Physics Archive Search and Extract |
| SpWx | space weather |
| SRAG | Space Radiation Analysis Group |
| SSA | space situational awareness |
| SSI | Synchronous Serial Interface |
| STEM | science, technology, engineering, and mathematics |
| STEREO | Solar Terrestrial Relations Observatory |
| SuperDARN | Super Dual Auroral Radar Network |
| SWAG | Space Weather Advisory Group |
| SWFO-L1 | Space Weather Follow On-Lagrange 1 |
| SWMF | Space Weather Modeling Framework |
| SWORM | Space Weather Operations, Research, and Mitigation |
| SWPC | Space Weather Prediction Center |
| SWPT | Space Weather Prediction Testbed |
| SWx | space weather |
| SWxSA | Space Weather Science Application Program |
| TEC | total electron content |
| THEMIS | Time History of Events and Macroscale Interactions during Substorms |
| TID | traveling ionospheric disturbance |
| TRL | technology readiness level |
| USGS | U.S. Geological Survey |
| UV | ultraviolet |
| WAM-IPE | Whole Atmosphere Model–Ionosphere Plasmasphere Exosphere |
| WIPSS | Worldwide Interplanetary Scintillation Stations |
| WMM | World Magnetic Model |