TY - JOUR AU - Sander, Rolf AU - Baumgaertner, Andreas AU - Cabrera-Perez, David AU - Frank, Franziska AU - Gromov, Sergey AU - Grooß, Jens-Uwe AU - Harder, Hartwig AU - Huijnen, Vincent AU - Jöckel, Patrick AU - Karydis, Vlassis A. AU - Niemeyer, Kyle E. AU - Pozzer, Andrea AU - Riede, Hella AU - Schultz, Martin G. AU - Taraborrelli, Domenico AU - Tauer, Sebastian TI - The community atmospheric chemistry box model CAABA/MECCA-4.0 JO - Geoscientific model development VL - 12 IS - 4 SN - 1991-9603 CY - Katlenburg-Lindau PB - Copernicus M1 - FZJ-2019-02482 SP - 1365 - 1385 PY - 2019 AB - 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. LB - PUB:(DE-HGF)16 UR - <Go to ISI:>//WOS:000463513500001 DO - DOI:10.5194/gmd-12-1365-2019 UR - https://juser.fz-juelich.de/record/862126 ER -