On the Estimation of energy Exchange between the Japan Sea and the Atmosphere during Winter Based upon the Energy Budget of Both the Atmosphere and the Sea

Abstract

First, the amount of both sensible and latent energy exchange between the Japan Sea and the atmosphere during winter were computed based upon the balance requirement of energy in the atmosphere. The detailed explanations about the method adopted here were made in the preceding paper about the modification of airmass over the Japan Sea during the period of typical outburst of cold continental air (12). The mean amount of supplied heat during January and February 1955 thus obtained is as much as 555 cal/cm2/day, though it is considerably smaller than that during the period of typical outburst of cold air at the end of December. 1954 (1030 cal/cm2/day). On the other hand, the mean amount of evaporation during winter is about 5.6mm/day which corresponds to 340 cal/cm2/day, and is considerably smaller than that of sensible heat, though the Bowen's ratio (6) is nearly equal to unity over the Japan Sea during this season. Finally in order to verify these results, the amount of energy exchange was estimated based upon the balance requirement of the energy of sea water.