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Modelling the UTLS Region with a Comprehensive Multi-scale CTM and Using Data Assimilation

  • H. Teyssèdre
  • M.-L. Cathala
  • P. Simon
  • J. Pailleux
  • V.-H. Peuch
Chapter

Abstract

MOCAGE is the new atmospheric chemistry model of Météo-France. Among the model features is the possibility to consider both the troposphere and lower stratosphere, as well as to treat several levels of nested domains. A comparison of a model simulation with MOZAIC observations shows a good agreement between the two. However, in order to further improve the realism of the simulations, data assimilation can be employed. We show that a non-local technique brings an improvement in the model that lasts for over four days, the time needed to have an almost global coverage with MOZAIC. This opens the possibility of conducting long model simulations, typically of the order of one year, with a realistic Upper Troposphere — Lower Stratosphere region.

Keywords

Data Assimilation Horizontal Resolution Nest Domain Data Assimilation Technique Tropospheric Chemistry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • H. Teyssèdre
    • 1
  • M.-L. Cathala
    • 1
  • P. Simon
    • 1
  • J. Pailleux
    • 1
  • V.-H. Peuch
    • 1
  1. 1.Météo-France, Centre National de Recherches MétéorologiquesToulouse CedexFrance

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