Abstract
A rational, systematic means of allocating air pollutant monitoring stations in an urban area is proposed in order to estimate the overall spatial averaged concentration. An urban area is divided into a certain number of subareas having nearly equal fluctuation of the pollution level. This division is made by solving an optimization problem of the spatial sample stratification in the Monte-Carlo random sampling method. In each subarea a representative point is selected in some defined sense as the location of a monitoring station. The procedure is applied to the design of the nitrogen oxides monitoring network in Kyoto airshed. The comparison between the proposed configuration and the actual one is presented.
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