Evaluation of effects of river, plant and wind on urban thermal environment using idealized numerical experiment

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Effects of river, plant and wind on urban thermal environment are evaluated using idealized urban scale and mesoscale numerical simulations. In the idealized urban scale simulation, the urban structure is simplified to extract effects of each structure component. It is found that both tilted wind direction and increase of plant occupation tend to increase wind stress with respect to urban structure. Mesoscale simulation of urban climate over Kanto plain during summer time revealed that the wind stress increase due to wind tilting and planting ratio change is found to increase in-land temperature, regardless of randomness of metrological condition.