On Some Relations between the Air Temperature and the Water Vapour Tension (I)

[摘要] In this short note, some relations between the daily means of vapour tension and air temperature in Tokyo are studied.Assuming that the temperature T is expressed by T=ax+by+cz+dm+N, where x, y, z and m are the mean vapour tension, the total solar and sky radiations measured by Robitzsch-actinograph, the hours of sunshine, the mean amount of cloud in the night-time respectively and N is a certain constant, we have calculated the coeffcients a, b, c, d, Nfor every month by the method of least square.The result of this calculation shows that a varies with the vapour tension, the annual mean of a being 1._??_32/m. m; the annual mean of T-N is 17._??_3C. It seems that a decreases as vapour tension increases. The annual means of and are about 62%, 23%, 8% and 7% respectively.The above results show that there is an intimate relation between air temperature and vapour tension, and that the radiation income can not also be neglected for forecasting the air temperature.

[学科分类] 大气科学