Faced with a changing climate, businesses, policy makers, and local communities need to access reliable weather and climate information to safeguard human health, wellbeing, economic growth, and environmental sustainability. In response to these challenges, the Blue-Action project was set up in 2016. Blue-Action is a H2020 project, funded under the BG10 call (Impact of Arctic changes on the weather and climate of the Northern Hemisphere) which provides fundamental and empirically-grounded, executable science that quantifies and explains the role of a changing Arctic in increasing predictive capability of weather and climate of the Northern Hemisphere. To achieve this Blue-Action takes a transdisciplinary approach, bridging scientific understanding within Arctic climate, weather and risk management research, with key stakeholder knowledge of the impacts of climatic weather extremes and hazardous events; leading to the co-design of better services.