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Glossary 

This glossary provides definitions of common terms used in the context of air pollution.

You can navigate quickly to a term using the alphabetic links below; clicking on the terms will show their definition.



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  • TEOM
  • TOMPS
  • Trajectory Model
    The trajectory model is used to predict episodes of photochemically generated pollutants in the summer, where long-range transport is an important factor in producing high UK concentrations. It uses the output of numerical weather prediction models as its input, and predicts how air masses have been transported for the preceding 96 hours. These pathways are known as "back trajectories". The model uses a simplified chemical scheme to predict the formation of ozone as the air travels to the UK. Concentrations of the secondary particle contribution to PM10 are also predicted by this model

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Page last modified: 14 February 2011