Welcome to OMNI

This 'Virtual Assessment Tool' is here to help those people who work in the field of air pollution. The site is specific to the area bounded by the M25 motorway, and provides assessment tools and information required by the National Air Quality Strategy (NAQS). This site was created and funded as a demonstrator project by the South East Institute of Public Health (SEIPH)

Omni is constantly being updated. Please let us know what you think of it.

Updates:
- Animation of the NO2 incident from 6th May 1995.

Information available on OMNI includes:

  • Emissions Inventory Information
    • Mobile Sources, including road transport
    • Point Sources, including part A and B industrial processes
    • Stationary Sources, including domestic gas combustion
    • Details on Emissions Inventories
  • Hourly Measurements from the London Air Quality Network of (Further details on the London Air Quality Network (LAQN)))
    • Oxides of Nitrogen (NOx)
    • Carbon Monoxide (CO)
    • Ozone (O3)
    • Particle PM10
    • Nitrogen Dioxide (NO2)
    • Benzene
    • 1,3 Butadiene
  • Air Quality Statistics from the years 1995-1997
  • Model Predictions of both background and roadside concentrations of NO2 and PM10 using:
    • High Resolution Spatial Analysis system (background)
    • Detailed street level dispersion modelling (roadside)
  • Details of the modelling methods and validation
Model predictions are for the year 1997