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A least-cost approach to personal exposure reduction.

Davies, Gemma and Whyatt, J. Duncan (2009) A least-cost approach to personal exposure reduction. Transactions in GIS, 13 (2). pp. 229-246. ISSN 1361-1682

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    Abstract

    Concerns over the potential negative health effects from exposure to air pollution have led to interest in assessing personal exposure and finding ways to reduce it. As journey-time exposure accounts for a disproportionately high amount of an individual’s total exposure, this article assesses the potential to apply least-cost techniques within a GIS in order to identify paths of lower journey-time exposure. The methodology adopted uses pollution surfaces for PM10 and CO generated by the dispersion model ADMS, with an analysis mask derived from OS MasterMap to create a least-cost surface. Actual routes taken by a cohort of 11–13 year old children on their journeys to school are used to compare observed journey time exposure with the exposure along alternative routes generated using the least-cost path function. While the least-cost approach proved to be successful in defining low exposure routes the ability to scale up this approach is constrained by the amount of editing required to successfully create an analysis mask from OS MasterMap data. Such alternative routes have the potential to assist in promoting safer environmental choices, however, their likelihood of adoption is dependant on a number of social and environmental influences which affect an individual’s route choice.

    Item Type: Article
    Journal or Publication Title: Transactions in GIS
    Additional Information: Funded by ESRC Small Grant RES-000-22-2023
    Uncontrolled Keywords: MasterMap • air pollution • journey-time exposure • space-time
    Subjects: G Geography. Anthropology. Recreation > G Geography (General)
    Departments: Faculty of Science and Technology > Lancaster Environment Centre
    ID Code: 26317
    Deposited By: Dr Duncan Whyatt
    Deposited On: 29 Apr 2009 13:17
    Refereed?: Yes
    Published?: Published
    Last Modified: 18 Aug 2017 01:22
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/26317

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