@article{LOSSOW17_ACP,
   author = "S. Lossow and H. Garny and P. J{\"o}ckel",
   title  = "An ''island'' in the stratosphere -- {o}n the enhanced annual
             variation of water vapour in the middle and upper stratosphere
             in the southern tropics and subtropics",
   journal= "Atmos. Chem. Phys.",
   volume = "17",
   number = "18",
   pages  = "11521-11539",
   doi    = "10.5194/acp-17-11521-2017",
   url    = "https://doi.org/10.5194/acp-17-11521-2017",
   year   = "2017"   }