Ozone climatology using interactive chemistry: Results from the Canadian Middle Atmosphere Model

作者：Jean de Grandpre, S. R. Beagley, Victor I. Fomichev, Erik Griffioen, John C. McConnell, Alexander S. Medvedev, T. G. Shepherd · 发表于：Journal of Geophysical Research Atmospheres · 年份：2000 · DOI：10.1029/2000jd900427 · 被引用次数：195 · 研究领域：Atmospheric Ozone and Climate、Atmospheric chemistry and aerosols、Atmospheric and Environmental Gas Dynamics

The climatology of ozone produced by the Canadian Middle Atmosphere Model (CMAM) is presented. This three‐dimensional global model incorporates the radiative feedbacks of ozone and water vapor calculated on‐line with a photochemical module. This module includes a comprehensive gas‐phase reaction set and a limited set of heterogeneous reactions to account for processes occurring on background sulphate aerosols. While transport is global, photochemistry is solved from about 400 hPa to the top of the model at ∼95 km. This approach provides a complete and comprehensive representation of transport, emission, and photochemistry of various constituents from the surface to the mesopause region. A comparison of model results with observations indicates that the ozone distribution and variability are in agreement with observations throughout most of the model domain. Column ozone annual variation is represented to within 5–10% of the observations except in the Southern Hemisphere for springtime high latitudes. The vertical ozone distribution is generally well represented by the model up to the mesopause region. Nevertheless, in the upper stratosphere, the model generally underestimates the amount of ozone as well as the latitudinal tilting of ozone isopleths at high latitude. Ozone variability is analyzed and compared with measurements. The comparison shows that the phase and amplitude of the seasonal variation as well as shorter timescale variations are well represented by the model a...