Ozone Assimilation

  • Richard B. Rood
Conference paper
Part of the NATO Science Series book series (NAIV, volume 26)


This chapter discusses the assimilation of atmospheric ozone, or more generally, the assimilation of trace constituents into a model that explicitly represents atmospheric transport and chemistry. The chemical production and loss terms will be parametrized using methods similar to those described in (1985). To derive this parametrization, the constituent being assimilated is assumed to be in near equilibrium with the environmental conditions. Perturbations from that chemical equilibrium, caused by transport or temperature dependent chemistry, return to equilibrium with calculated time constants. The time constants vary from many months to a few minutes as a function of season, altitude, and latitude. Besides ozone, the techniques discussed here are directly applicable to satellite measurements of, for instance, nitrous oxide, methane, carbon monoxide, the chlorofluoromethanes, and water vapour. Assimilation of reactive constituents whose concentrations are dependent on the concentration of other constituents, i.e. “full chemistry,” is discussed in the chapters Introduction to Atmospheric Photochemical Modelling and Multivariate Chemical Data Assimilation. A list of reading material that serves as an introduction to the discipline is given at the end.


Data Assimilation Total Ozone Tropospheric Ozone Total Column Ozone Assimilation Experiment 
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Copyright information

© Springer Science+Business Media Dordrecht 2003

Authors and Affiliations

  • Richard B. Rood
    • 1
  1. 1.NASA/Goddard Space Flight CenterGreenbeltUSA

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