PEEX is a multidisciplinary, bottom-up research initiative aiming at resolving the major uncertainties in the Earth system science and global sustainability questions in the Arctic and boreal Pan-Eurasian regions. The vision of the Pan Eurasian EXperiment (PEEX) is to solve interlinked global challenges influencing the human well-being and societies in the northern Eurasia, such as climate change, air quality, biodiversity loss, chemicalisation, food supply, use of natural resources by mining industry, energy production and transport, in an integrative way, recognizing the important role of the arctic and boreal ecosystems in the Earth system. The PEEX vision includes establishing and maintaining long-term, coherent and coordinated research activities and research and educational infrastructures in the PEEX domain. This session welcomes contributions from multidisciplinary research topics in the PEEX domain and updates the current status of the PEEX initiative and its working groups.