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

TLDR

MOZART‑4 is an offline global chemical transport model particularly suited for tropospheric studies. MOZART‑4 expands its chemical mechanism to include detailed hydrocarbon chemistry and bulk aerosols, and adds online calculations for dry deposition, isoprene/monoterpene emissions, and photolysis frequencies. An eight‑year (2000–2007) simulation was performed and evaluated, and the source code and standard input files are available for download from the NCAR Community Data Portal.

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 (http://cdp.ucar.edu).