The kinetic energy and the available potential energy budgets for large scale disturbances and general flow of the tropical circulation were calculated over the South China Sea for April-June, 1980, when kinetic energy budget of general flow was characterized by an energy source, the so-called dissipation term, which compensated for the cross. iso baric destruction, and the cross-contour generation,the energy sink. They constitued a balance of eddy kinetic energy. Available potential energy balance in gener...