抄録
The purpose of the present study is to evaluate the relationships between the rising rate of the average temperatures and the human activities at 47 prefectures in Japan, in recent 30 years (1980-2009). The annual average temperatures at each prefecture are rising at a rate of 3-5℃/100years. It is found that the rising rates of the daily mean and the daily minimum temperatures averaged over prefecture have significant relationships with the human activities, such as the emission of carbon dioxides.
Further, this report attempts to clarify the characteristics of urban climate in Japan from the difference between the diurnal changes in temperature at Urban and Rural areas. The difference of temperature between Urban and Rural areas has a maximum in evening in a day and in autumn in a year. It seems that those implicate a tendency of future climatic change.
