© Lloyd Pikok ACIA - An Arctic Council Success Story May 3, 2025Data and knowledgeClimateMonitoringAssessmentsRecommendationsArctic Monitoring and Assessment ProgrammeConservation of Arctic Flora and Fauna How a groundbreaking report brought Arctic voices on the global stage Article by: Oran R. Young, University of California, Santa Barbara Malgorzata Smieszek-Rice, UiT The Arctic University of Norway Susan Joy Hassol, Climate Communication Inge Thaulow, Conservation of Arctic Flora and Fauna; Tom Christensen, Conservation of Arctic Flora and Fauna; Gerlis Fugmann, International Arctic Science Committee Rolf Rødven, Arctic Monitoring and Assessment Programme The Arctic Climate Impact Assessment (ACIA) became the gold standard of regional climate assessments. The 2004 report was the first comprehensive assessment of a changing Arctic. Through skillful leadership, a diverse knowledge base, and targeted communication efforts, ACIA made global headlines. Its ripple effects can still be seen in the suite of reports and research efforts that followed. The Arctic Climate Impact Assessment (ACIA), delivered at the 4th Ministerial Meeting of the Arctic Council in October 2004, stands out as a prominent success story. It presented path-breaking insights regarding the complex coupling between the Arctic and the Earth’s climate system, and it exemplified the roles assessments can play in bringing knowledge to action. Considering the continuing relevance of ACIA’s principal messages and the lessons to be gleaned from this experience for future assessments, it’s timely to reflect on the sources of this success.