Acknowledgements
Funding for these studies was provided by a grant from Maa- ja Vesitekniikan Tuki ry. We also thank the Finnish Meteorological Institute (FMI) for allowing the instrument to be installed into an FMI hut. We acknowledge Mirka Hatanpää, Metsähallitus for assisting in DTS sensor maintenance, and Asmo Huusko, GTK for assisting in planning and installation of the DTS sensor. Writing was supported by Arctic Interactions Profi 4 (ArcI) program in University of Oulu, and Hydrological RDI partnership network funded by Academy of Finland (project code 337523), and national Freshwater Competence Center.