Development of the Motor Vehicle Emission Inventory (II)-Spatial Distribution Estimation and Trial Application to Exposure Assessment for Roadside Ppulation-:Spatial Distribution Estimation and Trial Application to Exposure Assessment for Roadside Populat
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概要
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The motor vehicle emission system was extended to show the spatial distribution of motor vehicle emissions for the whole Japan. By this system, emissions can be estimated in the road sections and in the third mesh (the grid of about 1km×1km) which was defined in the national mesh code. As a case study of spatial analysis using the emission data, population who exposed to the additional SPM from motor vehicles in the road sections was calculated. This spatial distribution system is distinguished by the following points; it covers the whole Japan, it has a high resolution of 1km×1km grid, and it is based on actual traffic data of the road traffic census. Emissions in each road sections of the road traffic census were calculated by both 24 hours traffic volumes reflecting detailed vehicle types and emission factors reflecting travel speed of each road sections. Spatial database was developed for the grid estimation by following procedures; linking section code to each road section item, cutting these items by grid, and attaching the third mesh code to each fraction. The emission distribution map made it easy to understand which area had larger emission than others. The third mesh unit emission data is suitable for analysis with other published mesh data and input data of various models. This system would be applied to a regional assessment tool of environmental policies. It is possible to calculate emissions per hour, if the origin destination data of the road traffic census were available.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
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