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European Geosciences Union, Geoscientific Model Development, 4(12), p. 1365-1385, 2019

DOI: 10.5194/gmd-12-1365-2019

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The community atmospheric chemistry box model CAABA/MECCA-4.0

Journal article published in 2019 by Rolf Sander ORCID, Andreas Baumgaertner, David Cabrera-Perez, Franziska Frank ORCID, Sergey Gromov ORCID, Jens-Uwe Grooß ORCID, Hartwig Harder ORCID, Vincent Huijnen ORCID, Patrick Jöckel ORCID, Vlassis A. Karydis ORCID, Kyle E. Niemeyer ORCID, Andrea Pozzer ORCID, Hella Riede ORCID, Martin G. Schultz ORCID, Domenico Taraborrelli ORCID and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract. We present version 4.0 of the atmospheric chemistry box model CAABA/MECCA that now includes a number of new features: (i) skeletal mechanism reduction, (ii) the Mainz Organic Mechanism (MOM) chemical mechanism for volatile organic compounds, (iii) an option to include reactions from the Master Chemical Mechanism (MCM) and other chemical mechanisms, (iv) updated isotope tagging, and (v) improved and new photolysis modules (JVAL, RADJIMT, DISSOC). Further, when MECCA is connected to a global model, the new feature of coexisting multiple chemistry mechanisms (PolyMECCA/CHEMGLUE) can be used. Additional changes have been implemented to make the code more user-friendly and to facilitate the analysis of the model results. Like earlier versions, CAABA/MECCA-4.0 is a community model published under the GNU General Public License.