AN ANALYSIS OF THE HEAT BALANCE IN EAST CHINA FOR THE PERIOD OF JULY 23-26 1959

In this paper we have computed the values of each term in the energy equation and the energy transfer through the boundaries of the region shown in fig. 1 for the period July 23-26, 1959 in East China. During this period the subtropic high pressure has extended inland to the computed region. It is found that in this period the region under consideration is an energy source from which the heat and water vapour flow outward. Through the southern boundary there is a net inflow of heat and water vapour, but at the eastern boundary there is an outflow of heat and water vapour in the lower layer and an inflow in the upper layers. In this region the energy loss was due to the effect of advection and radiation cooling, and the energy supply was due to the flux of sensible and latent heat from the surface, while the changes in heat and water vapour of the air colum played a minor role in the balance. The eddy flux of sensible heat is about 1.84 times that of the latent heat from evaporation.