| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Outline of Final Research Achievements |
In this study, energy exchange between air and leaves were measured and simulated. The reasons of the low temperature of vegetation is considered as not only the evaporation from the vegetation. Another important reason is high heat exchange between air and the vegetation. The temperature of leaves shows similar variation with air temperature. Heat transfer coefficients of different size of leaves were measured and the mechanism of low temperature of vegetation was simulated by using the model, Envi-met. In the measurement of heat transfer coefficients, smaller leaves show higher values although there were varieties of values. In the urban surface temperature image, tree area shows lower temperature in day time than lawn but shows higher temperature at night. This phenomena can be simulated by using the model which can calculate the energy budget of vegetative environment. These results can be used to clarify the cooling mechanism of urban vegetation.
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