一、引言 关于东亚季风的形成机制,一般认为主要是海陆分布的热力差异造成的,而海陆热力差异要通过大气本身的热力差异来影响环流。因此,大气热源如何影响季风环流过程,季风环流又是如何响应大气热源振荡的,是季风研究中很重要的问题。为了研究大气热源对季风环流的影响,我们设计了一个两维五层原始方程模式,用以试验在各种不同大气热源分布和作周期振荡时季风环流的响应。 I. INTRODUCTION As for the formation mechanism of the East Asian monsoon, it is generally believed that this is caused mainly by the thermal differences between the land and sea distributions. However, the differences between the sea and land heating forces affect the circulation through the differences in the thermal properties of the atmosphere itself. Therefore, how the atmospheric heat source affects the monsoon circulation and how the monsoon circulation responds to the oscillation of atmospheric heat sources are very important issues in monsoon research. In order to study the effect of atmospheric heat on monsoon circulation, we designed a two-dimensional five-layer primitive equation model to test the response of monsoon circulation over various atmospheric heat sources and for periodic oscillations.