A NUMERICAL EXPERIMENT OF THE MONSOON CIRCULATION INFLUENCED BY THE ATMOSPHERIC HEAT SOURCE AND ITS MEDIUM-RANGE OSCILLATION

In this paper, a two-dimensional five-layer primitive equation (P.E.) model is used for numerical experiment with regard to the monsoon circulation influenced by the atmospheric heat sources and their medium-range oscillation.It is concluded that both the single heating source and the double heating centers can excite a monsoon circulation or a Walker circulation, that the change of vertical heating profile can influence the thickness of the monsoon cell, that the cooling sources over the Arabian Peninsula and the Mid-Pacific play an important role in forming a monsoon circulation, that the heating sources over the Bay of Bengal and the South China Sea and its medium-range oscillation are the main mechanism forming the monsoon circulation, and that a strengthened source might intensify a monsoon circulation while reducing its extent, conversely, the results would be opposite, so the effects of the two heat centers interact with each other.