Dimitrios Antivachis^1,2, Prof. Kristofer Döös^1,2, Lars Axell³, Lars Arneborg⁴ and Inga Monika Koszalka^1,2, (1)Stockholm University, Department of Meteorology, Stockholm, Sweden, (2)Bolin Centre for Climate Research, Stockholm, Sweden, (3)Swedish Meteorological and Hydrological Institute, Department of Research and Development, Oceanography, Norrköping, Sweden, (4)Swedish Meteorological and Hydrological Institute, Department of Research and Development, Oceanography, Gothenburg, Sweden