Opportunity windows can speed up climate adaptation across Europe
A new paper led by Valeria Di Fant (Deltares / Utrecht University) reveals that Europe has far more opportunities to accelerate climate adaptation than usually is recognised. Rather than responding only when climate risks become urgent, the study showcases how political momentum, public support, availability of resources, technological innovation and/or routine maintenance cycles may accelerate adaptation action.
Article in Nature Communications Earth & Environment
These so called adaptation opportunity windows represent moments in time when adaptation measures become more feasible, affordable or desirable, and the new research provides a detailed map of where and when these moments occur across Europe.
The paper, “Opportunity windows accelerate action and expand options for climate adaptation in Europe,” published in Communications Earth & Environment, identifies 34 such opportunities. Twenty five of them are open right now, four were used or missed in the past, and another five are expected to open in the coming decades. The opportunities are identified through a combination of quantitative and qualitative sources, including the GRanD dams database from Lehner et al. (2011) and desk study of academic and grey literature.
Adaptation opportunities for proactive climate adaptation
Adaptation policy has traditionally been driven by risk: something breaks, fails or becomes unsafe, and only then does action follow. Yet the research team found many instances where conditions quietly shift in favour of adaptation before the limits of existing measures are reached. Sometimes this happens because infrastructure reaches the end of its lifespan, creating a natural moment to redesign or upgrade. In other cases, new EU directives or implementation deadlines create pressure to take action. Public support can rise sharply after major floods, droughts or wildfires, opening a temporary window in which more ambitious measures suddenly become acceptable. And as innovations like the Sand Motor or floating housing become mainstream, these open the door to wider adoption and new ways of designing with water. Even post disaster funding, released in the immediate aftermath of extreme events, can rapidly unlock resources that would otherwise take years to secure.
Together, these moments form a patchwork of opportunities that could significantly advance Europe’s climate resilience, if recognised and acted upon in time.
Examples from across Europe
The study highlights how these moments already shape adaptation across the continent. Europe’s aging dams and storm surge barriers are approaching major maintenance milestones, offering a timely chance to embed climate resilient design into long term infrastructure. After the devastating floods in Germany (2021) and Slovenia (2023), substantial recovery funds became available, creating a short-lived but powerful opening to rebuild in a more resilient way. Innovations pioneered in the Netherlands, such as the Sand Motor or amphibious and floating housing, are now inspiring similar pilots abroad, showing how local experimentation can spark wider adaptation. And shifts in public opinion after extreme weather events can temporarily increase demand for action, though the window often narrows again as memories fade.
Why these windows matter
Opportunity windows don’t stay open forever. They may close once political priorities shift, funds dry up or maintenance work is completed. The authors show that by embedding these moments into adaptive pathways planning, policymakers can anticipate them instead of reacting to them. This makes it possible to prepare measures in advance and act as soon as circumstances become favourable.
Lead author Valeria Di Fant (Deltares, Utrecht University) explains: “If you know when certain opportunities are likely to open, you can prepare for them. That makes it much easier to act at the right moment and avoid missing important chances.”
Key takeaways
The study demonstrates that Europe already has many openings to accelerate adaptation, far more than typically recognised. These moments arise from cycles of infrastructure renewal, public opinion shifts, innovations, disasters and new policies. When they are woven into adaptive planning, governments can respond more quickly and flexibly. And by using these moments strategically, adaptation becomes not only more effective but also more creative, expanding the range of solutions available.
About the study
The research was carried out by Deltares, Utrecht University, the International Institute for Applied Systems Analysis (IIASA), and Vrije Universiteit Amsterdam, with support from the EU Horizon 2020 programme Pathways2Resilience.
