The EMEP MSC-W chemical transport model – technical description D. Simpson1,2, A. Benedictow1, H. Berge1, R. Bergström3,4, L. D. Emberson5, H. Fagerli1, C. R. Flechard6, G. D. Hayman7, M. Gauss1, J. E. Jonson1, M. E. Jenkin8, A. Nyíri1, C. Richter9, V. S. Semeena1, S. Tsyro1, J.-P. Tuovinen10, Á. Valdebenito1, and P. Wind1,11 1EMEP MSC-W, Norwegian Meteorological Institute, Oslo, Norway 2Dept. Earth & Space Science, Chalmers Univ. Technology, Gothenburg, Sweden 3Dept. Chemistry, Univ. of Gothenburg, Gothenburg, Sweden 4Swedish Meteorological and Hydrological Institute, Norrköping, Sweden 5Stockholm Environment Institute, University of York, York, England 6INRA, Agrocampus Ouest, UMR 1069 SAS, Rennes, France 7Centre for Ecology and Hydrology, Wallingford, Oxfordshire, OX10 8BB, UK 8Atmospheric Chemistry Services, Okehampton, Devon EX20 1FB, UK 9Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) mbH, Cologne, Germany 10Finnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, Finland 11University of Tromsø, 9037 Tromsø, Norway
Abstract. The Meteorological Synthesizing Centre-West (MSC-W) of the European
Monitoring and Evaluation Programme (EMEP) has been performing model
calculations in support of the Convention on Long Range Transboundary Air
Pollution (CLRTAP) for more than 30 years. The EMEP MSC-W chemical transport
model is still one of the key tools within European air pollution policy
Traditionally, the model has covered all of Europe with a resolution of about
50 km × 50 km, and extending vertically from ground level to the
tropopause (100 hPa). The model has changed extensively over the last ten
years, however, with flexible processing of chemical schemes, meteorological
inputs, and with nesting capability: the code is now applied on scales
ranging from local (ca. 5 km grid size) to global (with 1 degree
resolution). The model is used to simulate photo-oxidants and both inorganic
and organic aerosols.
In 2008 the EMEP model was released for the first time as public domain
code, along with all required input data for model runs for one year.
The second release of the EMEP MSC-W model
became available in mid
2011, and a new release is targeted for summer 2012. This publication is
intended to document this third release of the EMEP MSC-W model.
The model formulations are given, along with details
of input data-sets which are used, and a brief background
on some of the choices made in the formulation is
The model code itself is available at www.emep.int, along with
the data required to run for a full year over Europe.
Citation: 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., Nyíri, 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. Phys., 12, 7825-7865, doi:10.5194/acp-12-7825-2012, 2012.