Scott M Osprey¹, Andrew C Bushell², Jadwiga Richter³, Neal Butchart², Laura Holt⁴, Tim Stockdale⁵, James Anstey⁶, Anne K Smith⁷, Kevin Peardon Hamilton⁸ and The QBOi Collaboration, (1)University of Oxford, Physics, Oxford, United Kingdom, (2)Met Office, Exeter, United Kingdom, (3)National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States, (4)NorthWest Research Associates, Boulder, United States, (5)ECMWF, Reading, United Kingdom, (6)Environment Canada, Canadian Centre for Climate Modelling and Analysis, Victoria, Canada, (7)National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling, Boulder, CO, United States, (8)IPRC/Univ Hawaii, Honolulu, HI, United States