When urban air temperature is simulated using a one dimensional heat budget model, the following coefficients and component are needed besides meteorological data; albedo, roughness parameter, thermal properties of ground (specific heat, specific weight and thermal conductivity), evaporative efficiency and anthropogenic heat component. In this paper, a determination method of the evaporative efficiency and the anthropogenic heat component by means of the comparison between the calculation values and the observation values is described. The estimation accuracy by this method is extremely high, though the accuracy of heat budget components are not clear.
