Värriö Subarctic Research Station was founded in 1967 and belongs to the Institute for Atmospheric Research at the University of Helsinki. It is located in the Värriö Strict Nature Reserve in eastern Finnish Lapland or – as the slogan of Salla municipality puts it – in the middle of nowhere. The station has collected exceptionally long data series on environmental factors, which reflect the changes in subarctic forests and fell ecosystems over decades. The studies in Värriö are multi- and interdisciplinary. The current research focuses e.g. on the productivity of the subarctic ecosystems, the effects of forest fires and reindeer herding as well as multiple atmospheric processes in the northern hemisphere. The station hosts the SMEAR I measurement station representing in internationally leading scientific research. Every year tens of students from Finland and elsewhere attend courses on e.g. northern forestry or geology at the Värriö Research Station.