Unified Data Model of Urban Air Pollution Dispersion and 3D Spatial City Model: Groundwork Assessment towards Sustainable Urban Development for MalaysiaReport as inadecuate




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Understanding the behavior of urbanair pollution is important en route for sustainable urban development SUD. Malaysiais on its mission to be a developed country by year 2020 comprehends dealing withair pollution is one of the indicators headed towards it. At present monitoringand managing air pollution in urban areas encompasses sophisticated air qualitymodeling and data acquisition. However, rapid developments in major citiescause difficulties in acquiring the city geometries. The existing method inacquiring city geometries data via ground or space measurement inspection suchas field survey, photogrammetry, laser scanning, remote sensing or usingarchitectural plans appears not to be practical because of its cost andefforts. Moreover, air monitoring stations deployed are intended for regionalto global scale model whereby it is not accurate for urban areas with typicalresolution of less than 2 km. Furthermore in urban areas, the pollutant dispersion movements aretrapped between buildings initiating it to move vertically causingvisualization complications which imply the limitations of existingvisualization schemethat is based on two-dimensional 2D framework. Therefore this paper aims isto perform groundwork assessment and discuss on the current scenario inMalaysia in the aspect of current policies towards SUD, air quality monitoringstations, scale model and detail discussion on air pollution dispersion modelused called the Operational Street Pollution Model OSPM. This researchproposed the implementation of three-dimensional 3D spatial city model as anew physical data input for OSPM. The five Level of Details LOD of 3D spatialcity model shows the scale applicability for the dispersion model implementtation.Subsequently 3D spatial city model data commonly available on the web, byhaving a unified data model shows the advantages in easy data acquisition, 3Dvisualization of air pollution dispersion and improves visual analysis of airquality monitoring in urban areas.

KEYWORDS

3D Spatial City Model; Urban Air Dispersion Model; Unified Data Model; Sustainable Urban Development; CityGML; 3D Visualization; 3D GIS

Cite this paper

U. Ujang, F. Anton and A. Rahman -Unified Data Model of Urban Air Pollution Dispersion and 3D Spatial City Model: Groundwork Assessment towards Sustainable Urban Development for Malaysia,- Journal of Environmental Protection, Vol. 4 No. 7, 2013, pp. 701-712. doi: 10.4236-jep.2013.47081.





Author: Uznir Ujang, Fran├žois Anton, Alias Abdul Rahman

Source: http://www.scirp.org/



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