The goal of the proposed Session is to bring together scientists who conduct their studies over the Northern Asia domain to share their findings, to discuss the yet unresolved problems, and to establish fruitful collaboration within a broad range of the disciplines and research groups. We invite presentations on the biogeochemical cycles, the surface energy budget and water cycle, climate and terrestrial ecosystems interactions (land cover and land use, atmospheric aerosols, soil, and, in particular, permafrost and weather extreme changes that affect and are being affected by climate and ecosystems changes), "human dimension" that includes, in addition to regional impact studies of environmental changes, the feedback studies of societal and land use changes on regional and global environment and climate, and tools to address the regional studies (paleoclimatic reconstructions, present and past field campaigns, remote sensing, and modeling).