Response of stratospheric water vapor and ozone to the unusual timing of El Niño and the QBO disruption in 2015–2016 - Diallo, M.; Riese, M.; Birner, T.; Konopka, P.; Müller, R.; Hegglin, M. I.; Santee, M. L.; Baldwin, M.; Legras, B.; Ploeger, F. (Atmos. Chem. Phys., 2018)