.. index:: References References ---------- .. REFERENCES FOR HERE .. [Bergstrom_et_al2020a] Bergström, R. et al., Update and comparison of chemical mechanisms for the EMEP MSC-W model system --- EmChem19a, EmChem19X, CRIv2R5Em, CB6r2Em, and MCMv3.3Em, in preparation, 2020. .. [Bergstrom_et_al2020b] Bergström, R. et al., Organic aerosol schemes for the EMEP MSC-W model for European and Global scale simulations .. [Simpson_et_al2012] Simpson, D., Benedictow, A., Berge, H., Bergström, R., Emberson, L. D., Fagerli, H., Flechard, C. R., Hayman, G. D., Gauss, M., Jonson, J. E., Jenkin, M. E., Nyri, A., Richter, C., Semeena, V. S., Tsyro, S., Tuovinen, J.-P., Valdebenito, Á., and Wind, P. The EMEP MSC-W chemical transport model – technical description *Atmos. Chem. Physics*, 2012, 12, 7825-7865 .. [SimpsonTuovinen2014] Simpson, D. and Tuovinen, J.-P., ECLAIRE Ecosystem Surface Exchange model (ESX), in Transboundary particulate matter, photo-oxidants, acidifying and eutrophying components. Status Report 1/2014, The Norwegian Meteorological Institute, Oslo, Norway, pp 147-154, 2014 .. [Simpson_et_alEMEP2019] Simpson, D., Bergström, R., Tsyro, S. and Wind, P., Updates to the EMEP/MSC-W model, 2018--2019, in EMEP Status Report 1/2019, The Norwegian Meteorological Institute, Oslo, Norway, pp 145-155, www.emep.int, 2019 .. [Simpson_et_al_2020] Simpson, D., Bergström, R., Briolat, A., Imhof, H., Johansson, J., Priestly, M. and Valdebenito, GenChem v1.0 - a chemical pre-processing and testing system for atmospheric modelling, [Accepted for publication](https://gmd.copernicus.org/preprints/gmd-2020-147/) .. comment:: ** NOTE !! This user-guide is a work-in-progress manual on the GenChem system, with this interim version produced for interested users, Oct. 2020. **