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A GIS approach to modelling traffic related air pollution

Collins, Susan (1998) A GIS approach to modelling traffic related air pollution. Doctoral thesis, University of Huddersfield.

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    There is increased concern regarding the effect of traffic related pollution on public
    heath. As the number of vehicles on the roads continues to rise, it is becoming
    increasingly more important to identify areas where the population may be at a greater
    risk to raised levels of pollution and areas where the implementation of policy to
    control and monitor levels of pollution would be beneficial.

    Traditionally, levels of air pollution have been established through dispersion modelling
    or monitoring. However, for modelling traffic related pollution for large populations,
    these methods have proved inappropriate.

    Three new approaches have been developed to model traffic related air pollution and
    are reported in this thesis. The approaches have been developed in a Geographical
    Information System (GIS) and involve generating detailed maps of the pollution
    surface from monitored data and information about the pollution sources. The new
    methods are compared against the geostatistical technique kriging.

    The first approach combines spatial interpolation from monitoring sites and dispersion
    modelling, linking the dispersion model to the GIS, the second combines GIS
    techniques for filtering data and spatial interpolation, and the third uses a combination
    of GIS techniques for filtering and statistical techniques.

    The three approaches are tested and validated by predicting levels of pollution at
    monitoring sites not used to develop the models. It was found that the new
    approaches provided more reliable estimates of pollution at unsampled locations than
    kriging, with the last of these proving to be the most effective. The adjusted r2 values
    for kriging, interpolation and dispersion, interpolation and filtering, and filtering and
    statistics were found to be 0.44, 0.63, 0.67 and 0.82 respectively.

    The approaches therefore have clear potential in the areas of air pollution management
    and epidemiology, where the maps can be used to help identify locations where levels
    of pollution exceed air quality standards, assess the relationship between air pollution
    and health outcome and examine the risk of exposure to raised levels of pollution.

    Item Type: Thesis (Doctoral)
    Additional Information: EThOS Persistent ID
    Uncontrolled Keywords: Urban air pollutants, Health effects, Air Pollution, Environmental engineering, Environmental protection
    Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
    Schools: School of Applied Sciences
    Depositing User: Graham Stone
    Date Deposited: 30 Jun 2009 10:24
    Last Modified: 28 Jul 2010 19:38


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