Articles | Volume 3, issue 1
Geosci. Model Dev., 3, 43–67, 2010
Geosci. Model Dev., 3, 43–67, 2010

  12 Jan 2010

12 Jan 2010

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

L. K. Emmons1, S. Walters1, P. G. Hess1,*, J.-F. Lamarque1, G. G. Pfister1, D. Fillmore1,**, C. Granier2,3, A. Guenther1, D. Kinnison1, T. Laepple1,***, J. Orlando1, X. Tie1, G. Tyndall1, C. Wiedinmyer1, S. L. Baughcum4, and S. Kloster5,* L. K. Emmons et al.
  • 1National Center for Atmospheric Research, Boulder, CO, USA
  • 2Centre National de la Recherche Scientifique, Paris, France
  • 3NOAA, Earth System Research Laboratory, Boulder, CO, USA
  • 4Boeing Company, Seattle, WA, USA
  • 5Max-Planck-Institute for Meteorology, Hamburg, Germany
  • *now at: Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA
  • **now at: Tech-X Corporation, Boulder, CO, USA
  • ***now at: Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany

Abstract. 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 (