| AECO | Association of Arctic Expedition Cruise Operators |
| ALOS | Advanced Land Observing Satellite |
| AMSR | Advanced Microwave Scanning Radiometer |
| APECS | Association of Polar Early Career Scientists |
| APPLICATE | Advanced Prediction in Polar regions and beyond: Modelling, observing system design and LInkages associated with ArctiC ClimATE change |
| ARC MFC | Arctic Monitoring Forecasting Centre |
| ArcMBA | Arctic Missio Benefit Analysis |
| ARCSAR | Arctic and North Atlantic Security and Emergency Preparedness Network |
| ARICE | Arctic Research Icebreaker Consortium |
| ASIP | Automatiserede havisprodukter for grønlandske farvande |
| ASSW | Arctic Science Summit Week |
| C3S | Copernicus Climate Change Service |
| CALM/TSP | Circumpolar Active Layer Monitoring Network – |
| CARRA | Copernicus Arctic Regional ReAnalysis |
| CIRFA | Centre for Integrated Remote Sensing and Forecasting for Arctic Operations |
| CliC | Climate and Cryosphere |
| CLIVAR | Climate variability and predictability |
| CLMS | Copernicus Land Monitoring Service |
| CMEMS | Copernicus Marine Environment Monitoring Service |
| CMIP | Coupled Model Intercomparison Project |
| CMUG | Climat Modelling User Group |
| COMNAP | Council of Managers of National Antarctic Programs |
| CSA | Coordination and Support Action |
| DIAS | Data and Information Access Services |
| DLR | Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center) |
| ECV | Essential Climate Variable |
| EEA | European Environment Agency |
| EGNSS | European Global Navigation Satellite Systems |
| EIS | European Ice Services |
| EMSA | European Maritime Safety Agency |
| EO | Earth Observation |
| EOEP | Earth Observation Envelope Program |
| ESA | European Space Agency |
| ETSI | Expert Team on Sea Ice |
| EUMETSAT | European Organisation for the Exploitation of Meteorological Satellites |
| FO | Financial Officer |
| FYI | First year ice |
| GA | General Assembly |
| GCOS | Global Climate Observing System |
| GCW | Global Cryosphere Watch |
| GEOCRI | GEO Cold Regions |
| GEOSS | Global Earth Observation System of Systems |
| GHG | Greenhouse Gas |
| GLO MFC | Global Monitoring and Forecasting Center |
| GOS | Global Observing System |
| GPR | Ground Penetrating Radar |
| GTN-P | Global Terrestrial Network for Permafrost |
| HPCM | High Priority Candidate Mission |
| IAATO | International Association of Antarctica Tour Operators |
| IASC | International Arctic Science Committee |
| ICES | International Council for the Exploration of the Sea |
| ICOS | Integrated Carbon Observation System |
| IHO | International Hydrographic Organization |
| IICWG | International Ice Charting Working Group |
| IICWG-DAWG | IICWG Data Assimilation and modelling Working Group |
| IMO | International Maritime Organization |
| IMR | Institute of Marine Research (Norway) |
| INTAROS | Integrated Arctic observation system |
| INTERACT | International Network for Terrestrial Research and Monitoring in the Arctic |
| IOC | Intergovernmental Oceanographic Commission |
| IOS | Integrated Observing System |
| IPY | International Polar Year |
| JAXA | Japan Aerospace Exploration Agency |
| JCOMM | Joint Commission on Marine Meteorology |
| JPL | Jet Propulsion Laboratory |
| KEPLER | Key Environmental monitoring for Polar Latitudes and European Readiness |
| LEAR | Legal Entity Appointed Representative |
| MDA | MacDonald, Dettwiler and Associates |
| MST | Management Support Team |
| MYI | Multi-year ice |
| NASA | National Aeronautics and Space Administration |
| NOAA | National Oceanic and Atmospheric Administration |
| NORP | Northern Oceans Region Panel |
| NVE | Norwegian Water Resources and Energy Directorate |
| NWS | National Weather Service (USA) |
| OSI SAF | Ocean and Sea Ice Satellite Application Facility |
| OSI TAC | Ocean and Sea Ice Thematic Assembly Center |
| PAB | Project Advisory Board |
| PM | Programme Manager |
| PO | Programme Office |
| PPP | Polar Prediction Project |
| PSTG | Polar Space Task Group |
| QND | Quantitative Network Design |
| RPAS | Remote Piloted Airborne Systems |
| SALIENSEAS | Enhancing the Saliency of climate services for marine mobility Sectors in European Arctic Seas |
| SAON | Sustaining Arctic Observing Networks |
| SaR | Search and Rescue |
| SAR | Synthetic Aperture Radar |
| SC | Steering Committee |
| SCAR | Scientific Committee on Antarctic Research |
| SEDNA | Safe maritime operations under extreme conditions: the Arctic case |
| SEOM | Scientific Exploitation of Operational Missions |
| SICCI | Sea Ice Climate Change Initiative |
| SIDARUS | Sea Ice Downstream Services for Arctic and Antarctic Users and Stakeholders |
| SIMIP | Sea Ice Model Intercomparison Project |
| SIOS | Svalbard Integrated Arctic Earth Observing System |
| SPICES | Space-borne observations for detecting and forecasting sea ice cover extremes |
| TEP | Thematic Exploitation Platform |
| TL | Task Leader |
| TPM | Third-Party Mission |
| UiO | University of Oslo |
| USGS | United States Geological Survey |
| UWB | Ultra Wideband |
| WEF | World Economic Forum |
| WGI | Integrated Working Group |
| WMO | World Meteorological Organization |
| WP | Work Package |
| WPL | Work Package Leader |
| WWRP | World Weather Research Programme |
| YOPP | Year Of Polar Prediction |