Persistence and photochemical decay of springtime total ozone anomalies in the Canadian Middle Atmosphere Model S. Tegtmeier and T. G. Shepherd Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany Department of Physics, University of Toronto, Toronto, Ontario, Canada Received: 19 January 2006 – Accepted: 10 February 2006 – Published: 28 April 2006 Correspondence to: S. Tegtm...