“…This implies a step change in given location in the flow, just below the Interface, one could determine its vertical velocity and tenperatur e. This fluid element is exposed to an increasing temperature in the stratified zone of height L 2 , where the two--32 -layer model is obtained for 0, until it emerges in the upper zone at temperature T" . Neglecting viscous effects, a balance between the kinetic and potential energy leads to; (29) or,…”