Secular Change of Air-temperature in Japan

[摘要] Using Japanese observational materials during the periods 50_??_60 years, and analysing by means of the Method of Least Square, the author has concluded that:(1) In large developing cities such as Tôkyô, Oosaka and Kyôto, the observed air-temperature is tending to increase year after year (about 1°C century). The cause of increasing air-temperature is probably due to the artificial generation of heat by industry, transporting system, cooking and heating apparatus. Such a tendency is especially remarkable in colder half of the year.(2) The air-temperature in Japan, as a whole, seems to have a general tendency to increase year after year.(3) The annual variability of air temperature in high latitudes is much greater than that in low latitudes.

[学科分类] 大气科学