The general objective of the project is to use the Nansen International Environmental and Remote Sensing Centre (NIERSC) established in St. Petersburg, Russia, and funded by Norway and Germany, as the joint research facility to extend, consolidate and strengthen scientific cooperation between researchers from the EU Member States and Associated Countries with those from Russia through the joint studies of climate and environmental changes in the Arctic and Sub-Arctic in the 21st century and their socio-economic impact. NIERSC research facilities, enhanced and expanded in the frame of the project, will be opened to the researchers from other Member States, specifically from Austria, Finland, France, Sweden and UK, additionally to researchers from Germany, Norway and Russia, founders of NIERSC. Increasing and extending scientific cooperation between researchers from the Member States and Associated Countries with Russian researchers will be organized through involvement of additional researchers in the NIERSC ongoing projects and preparation of new future joint scientific projects in the area of environmental and climate research in the Arctic and Sub-Arctic including socio-economic issues via organization of joint scientific workshops and seminars. Since 1992 NIERSC has built a wide network with Russian research institutions, universities and governmental agencies which will serve in the future for further enhancement of European-Russian cooperation in proposed research area far beyond the completion of EuRuCAS. To sustain this cooperation in the future, young generation of researchers will be greatly involved in the project through research periods at NIERSC and organizing Summer School with the focus on environmental and climate research in the Arctic and Sub-Arctic including socio-economic impact. Within EuRuCAS implementation the ways for opening NIERSC institutional arrangements for new members from EU Member States and/or Associated Countries will be defined.