四日市における過去のSO_2濃度分布推計 : 拡散シミュレーションと線形回帰分析(都市・屋内環境(2),一般講演)

概要

論文の詳細を見る
We made the numerical prediction of diffusion of SO_2 in Yokkaichi Area in the past using the data of hearings at factories located in Yokkaichi in 1967 and 1972. The calculation was made by first applying a three-dimensional grid over the entire Yokkaichi Area using a coordinates system adapted to topography of the ground, and then calculating three-dimensional wind velocity field. Next, unsteady diffusion of SO_2 was determined by overlapping with the diffusion field calculations using the same generalized coordinates. We also attempted to estimate the exact concentration distribution by performing the regression analysis compared with the observation values. Because of the limitations on the data of discharges from the residential and commercial sector in 1967, the reliability of the prediction of SO_2 concentration this study may not necessarily be accurate. More data needs to be collected and some simulations need to be repeated in order to improve the reliability.
2008-09-04