本文利用南海发展与不发展低压的两组合成资料集,对比分析了两类低压在结构上的异同,并分别计算了它们的加热场和涡度收支。 结果表明,两类低压的热力和动力结构大致相似,但也存在明显差异。它们的涡度收支都主要取决于散度制造项、涡度平流项和垂直输送项,积云对流的垂直输送作用也十分重要,其中贡献最大的是散度项。这方面发展低压比不发展低压表现得更明显。 In this paper, two sets of synthetic datasets are used to develop and not develop low pressure in the South China Sea. The similarities and differences between the two kinds of low pressure structures are compared and analyzed. Their heating fields and eddy balances are calculated respectively. The results show that the two types of low-pressure thermal and dynamic structure are generally similar, but there are also significant differences. Their vorticity balance depends mainly on the divergence production, eddy advection and vertical transport terms. The vertical transport of cumulus convection is also very important, of which the divergence is the largest contributor. In this regard, the development of low pressure than the development of low pressure is more obvious.