The EMEP MSC-W chemical transport model - technical description
Journal article, 2012

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 assessments. Traditionally, the model has covered all of Europe with a resolution of about 50 km x 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 in-tended 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 presented. The model code itself is available at, along with the data required to run for a full year over Europe.


regional air-quality

north-atlantic ocean

column abundance

bidirectional ammonia exchange

gaseous dry deposition

atmospheric dust cycle

ozone deposition module

secondary organic aerosol

intermediates cri mechanism

long-range transport


David Simpson

Chalmers, Earth and Space Sciences, Global Environmental Measurements and Modelling

A. Benedictow

Norwegian Meteorological Institute

H. Berge

Norwegian Meteorological Institute

Robert Bergström

University of Gothenburg

L. Emberson

University of York

H. Fagerli

Norwegian Meteorological Institute

C. R. Flechard

Agrocampus Rennes

G. D. Hayman

Centre for Ecology and Hydrology

M. Gauss

Norwegian Meteorological Institute

J. E. Jonson

Norwegian Meteorological Institute

M. E. Jenkin

Atmospheric Chemistry Services

A. Nyiri

Norwegian Meteorological Institute

C. Richter

Gesellschaft fur Anlagen- und Reaktorsicherheit mbH

V. S. Semeena

Norwegian Meteorological Institute

S. Tsyro

Norwegian Meteorological Institute

J. P. Tuovinen

Finnish Meteorological Institute (FMI)

A. Valdebenito

Norwegian Meteorological Institute

P. Wind

Norwegian Meteorological Institute

Universitetet i Tromsö

Atmospheric Chemistry and Physics

1680-7316 (ISSN) 1680-7324 (eISSN)

Vol. 12 16 7825-7865

Driving Forces

Sustainable development

Subject Categories

Physical Chemistry

Meteorology and Atmospheric Sciences

Earth and Related Environmental Sciences

Geosciences, Multidisciplinary


Basic sciences



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9/6/2018 1