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DISPERSION21 (also called DISPERSION 2.1) is a local scale atmospheric pollution dispersion model developed by the air quality research unit at Swedish Meteorological and Hydrological Institute (SMHI), located in Norrköping.[1][2]

The model is widely used in Sweden by local and regional environmental agencies, various industrial users, consultant services offered by SMHI and for educational purposes.

Features and Capabilities[edit]

Some of the basic features and capabilities of DISPLAY21 are:[3]

See also[edit]

Further reading[edit]

For those who are unfamiliar with air pollution dispersion modelling and would like to learn more about the subject, it is suggested that either one of the following books be read:


  1. ^ Dispersion 2.1 page on SMHI web site
  2. ^ Air quality research staff
  3. ^ The Model Documententation System (MDS) of the European Topic Centre on Air and Climate Change (part of the European Environment Agency)

External links[edit]

  • SMHI web site click on 'Products & Services', then on 'Environment', and then on 'Dispersion'