Arrangement plan of urban cool spots in Sendai using the new urban climatic maps based on urban climate analyses

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The effects of natural urban cool spots, i.e. greens, river, etc., on outdoor thermal environment in summer were investigated by field measurements and numerical analyses based on CFD (Computational Fluid Dynamics)1) Field MeasurementField measurements of spatial distribution of air temperature, relative humidity and wind velocity were carried out in Haramachi city of Fukusima Prefecture, in the summers of 2001 and 2002. The results of field measurement are as follows:・ Large effects of sea breeze on outdoor air temperature were observed.・ Although the water temperature of river is higher than air temperature, the air temperature around river was lower than those in residential and urban areas. This is because river played an important role of the passage of the cold air from sea breeze.2) CFD analysesCFD analyses of a mesoscale climate in Tohoku district were carried out. The large effects of sea breeze on outdoor thermal environment in the coastal cites along the Pacific in Tohoku region, such as Sendai and Haramachi, were confirmed and its mechanism was numerically investigated by CFD analyses.3) A prototype of a new type of climate mapA new concept of climate map based on the results of climate analyses was proposed, and the method of rearrangement of numerical data was studied for appropriate management of heat transfer in urban space. A prototype of climate map of Sendai was developed according to the concept proposed in this study.