Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016 - Marsing, Andreas; Jurkat-Witschas, Tina; Grooß, Jens-Uwe; Kaufmann, Stefan; Heller, Romy; Engel, Andreas; Hoor, Peter; Krause, Jens; Voigt, Christiane (EGU, 2019)