Clarifying the roles of tropical tropopause temperatures, the Brewer-Dobson circulation, and Antarctic cooling in long-term variations of stratospheric water vapor over the past 40 years

Mengchu Tao, IAP, Chinese Academy of Sciences, Beijing, China, Paul Konopka, Forschungszentrum Juelich, Institute of Energy and Climate Research(IEK-7): Stratosphere, Juelich, Germany, Felix Ploeger, Forschungszentrum Jülich GmbH, IEK-7, Jülich, Germany, Jonathan Wright, Tsinghua University, Department of Earth System Science, Beijing, China and Yi Liu, Insititute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China