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Open Access Publications from the University of California

Description and evaluation of the Model for Ozone and Related chemical Tracers, version 4 (MOZART-4)

  • Author(s): Emmons, LK
  • Walters, S
  • Hess, PG
  • Lamarque, J-F
  • Pfister, GG
  • Fillmore, D
  • Granier, C
  • Guenther, A
  • Kinnison, D
  • Laepple, T
  • Orlando, J
  • Tie, X
  • Tyndall, G
  • Wiedinmyer, C
  • Baughcum, SL
  • Kloster, S
  • et al.

The Model for Ozone and Related chemical Tracers, version 4 (MOZART-4) is an offline global chemical transport model particularly suited for studies of the troposphere. The updates of the model from its previous version MOZART-2 are described, including an expansion of the chemical mechanism to include more detailed hydrocarbon chemistry and bulk aerosols. Online calculations of a number of processes, such as dry deposition, emissions of isoprene and monoterpenes and photolysis frequencies, are now included. Results from an eight-year simulation (2000-2007) are presented and evaluated. The MOZART-4 source code and standard input files are available for download from the NCAR Community Data Portal (

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