Investigating thermal energy equilibrium in the Persian Gulf

Iran is connected to the global oceans and other countries through the Persian Gulf, Oman Sea and Caspian Sea. Generally, the total amount of all thermal radiuses entered to the oceans and exited from them should be zero; otherwise, the oceans will be either freeze over or grown hot. The goal in this paper is to survey the thermal equilibrium in the Persian Gulf. Since the rainfall rate and the waters entered the Persian Gulf was about 90cm/a, and evaporation rate was about 213cm/a, therefore, the evaporation rate of 20-25cm/a, in one year was more than the rainfall in the Persian Gulf. Considering this point that the volume of output and input waters in the Persian Gulf were equal to 0.186×10^6 m^3/s and 0.169×10^6 m^3/s respectively, the net heat transfer of the Persian Gulf estimated to be 25W/m^2. It was tried to justify this amount of extra heat of the Persian Gulf by the term of surface heat flux. In this research, the annual average of short waves observed on the surface of the Persian Gulf was about 245 W/m^2, the flow of the surface heat, the flow of the latent heat, and also infrared radiation flux were calculated as -4, 179, and 92 W/m^2, correspondingly. Thus, a shortage of heat about 22 W/m^2 related to the additional heat entered the Persian Gulf was observed.