This package contains the GenChem system, which includes a chemical pre-processor (GenChem.py) for converting chemical equations into differential form for use in atmospheric chemical transport models (CTMs). Although primarily intended for users of the EMEP MSC-W chemical transport model (https://github.com/metno/emep-ctm) and related systems, GenChem also features a simple box-model testing system (boxChem), which can run as a stand-alone chemical solver, enabling for example easy testing of chemical mechanisms against each other.

To get started, read the documentation article and guide:

https://gmd.copernicus.org/articles/13/6447/2020/

https://genchem.readthedocs.io/en/latest/index.html

Updates:

2022-06-14: Revised tag: 1.1 2022-06-13: Added -g --gnfr flags to enable GNFR emissplits, and renamed files, e.g. emissplit_snap_defaults_voc.csv

2020-12-21: GMD article published! Link above updated

2020-10-22: GMD article accepted for publication.

2020-09-03: Bug fix: changed log to log10 in Shorthands file for CB6r2Em changed group name of PANs to PANS in Species file Moved chem/scripts/GenIn_Shorthands.txt to chem/generic_Shorthands.txt to make this file more visible. Added -i, -v args to getboxconcs.py in box/scripts