Kulmala, M. [P:(DE-HGF)0] ; Petäjä, T. [P:(DE-HGF)0] ; Ehn, M. [P:(DE-Juel1)144056] ; Thornton, J. [P:(DE-HGF)0] ; Sipilä, M. [P:(DE-HGF)0] ; Worsnop, D. R. [P:(DE-HGF)0] ; Kerminen, V.-M. [P:(DE-HGF)0]