ANCEN: Building Europe’s Framework for Aviation’s Non-CO₂ Climate Impacts
Europe is establishing a new, systematic framework to accurately assess aviation’s non-CO₂ climate impacts, with Env-isa contributing to this foundational effort.
The Aviation Non-CO₂ Expert Network (ANCEN), coordinated by EASA, is building the structure needed to better understand and manage these complex climate impacts. As one of its contributors, Env-isa plays a key methodological role in this collective effort, co-authoring several deliverables that connect scientific work with policy-relevant insights and jointly coordinating with Ricardo the technical delivery for each task. In particular, Env-isa leads the tasks of maintaining and updating the overview of historic and ongoing work on non-CO2 impacts, of establishing a strategic framework for non-CO2 research and further ANCEN activities, and of providing technical support to policymakers.
A Crucial Milestone in Climate Management
The newly released Year 1 Annual Report and Deliverables mark an important shift. Together, they provide a shared structure and direction for safely integrating non-CO₂ effects and evolving scientific perspectives into a coherent climate-impact management framework.
Key deliverables published under ANCEN include:
- Common Terminology – establishing a shared scientific language across the community.
- Uncertainty Framework – introducing more comprehensive communication standards aligned with IPCC methodology.
- Robust Decision-Making Process – turning uncertainty into actionable policies through no-regrets logic.
- ICAO CAEP Best Practices in Aircraft Emissions Modelling – providing quantitative guidance for consistent assessment.
- Overview of Historic and Ongoing Work – mapping existing knowledge to strengthen collaboration.
- Annual Report – aligning technical progress with governance and future policy development.
A special thanks to Thomas Roetger (Senior Associate, Env-isa), Michele Cremaschi (Head of Environment and Innovation Team, Env-isa), Lukas Durdina (Senior Associate, Env-isa), and Greg Smallwood (Senior Associate, Env-isa), whose expertise and dedication made this milestone possible.
At Env-isa, we remain committed to supporting this collective effort to make aviation’s climate impact management more transparent, science-based, and actionable.
Read the full report here