Impact of major sudden stratospheric warmings and the quasi-biennial oscillation on the variability of stratospheric water vapor

Mengchu Tao1, Paul Konopka2, Felix Ploeger1, Dale F Hurst3, Martin Riese1, Rolf Mueller1 and C Michael Volk4, (1)Forschungszentrum Jülich GmbH, IEK-7, Jülich 52428, Germany, (2)Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research(IEK-7): Stratosphere, Jülich, Germany, (3)Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States, (4)Bergische Univ. Wuppertal, Wuppertal, Germany