Efrén Feliu holds a Building Engineering Degree as well as different postgraduates including spatial planning and territorial development. Has a long trajectory in in project planning and implementation as well as relevant professional background in technical assistance and capacity building for public administrations and utilities. Worked in Central America for over 4 years and is involved in international and European initiatives for more than 25 years. Currently Climate Change Manager at the City Territory and Environment Area of Tecnalia, coordinating applied research projects for the development of Decision Support Systems and tools, including integration of earth observation (EO) products, in the fields of sustainable spatial development, naturebased solutions, regional-urban resilience and sectoral climate change adaptation. Involved in standardisation activities, having participated in ISO Working Groups related to Climate Adaptation (ISO 14090 and 14092) as well as Climate Risks Analysis (ISO 14091), also appointed as national expert in CEN TC465 and TC467. Participates in the Spanish Mirror Group for the EU Mission Adaptation to Climate Change.