Abstract
The dispersion of pollen was predicted numerically in the eastern Aichi. This simulation was conducted by the diffusion equation. Then, velocity data calculated by mesoscale weather model, MM5, was used. Although the quantity and the timing of dispersing pollen from trees had to be modeled, its quantity was assumed to be constant along a forest in this simulation. The present prediction was carried out on March 6, 2007 when a lot of pollen diffused in the eastern Aichi. The accuracy of this prediction improves by concerning forest distributions, the sedimentation velocity of pollen, the lay of land and so on in the near feature.
