Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
Geosci. Model Dev., 3, 43-67, 2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
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,* 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 (

Citation: Emmons, L. K., Walters, S., Hess, P. G., Lamarque, J.-F., Pfister, G. G., Fillmore, D., Granier, C., Guenther, A., Kinnison, D., Laepple, T., Orlando, J., Tie, X., Tyndall, G., Wiedinmyer, C., Baughcum, S. L., and Kloster, S.: Description and evaluation of the Model for Ozone and Related chemical Tracers, version 4 (MOZART-4), Geosci. Model Dev., 3, 43-67,, 2010.
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