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使用改进的美国普林斯顿大学区域海洋环流模式（ＰＯＭ）对南海及邻近海区１９９８年１～８月海况进行了数值模拟，所得的主要结果与海洋观测及已有的一些研究结果基本一致。模拟结果表明：１～８月，黑潮南海分支是南海北部的一支重要海流；除冬季月份外，南海暖流都清晰可见：黑潮右侧的大尺度反气旋性暖涡１～８月都存在。在所模拟的海区中，南海海区表层海流与季风关系最密切，季节变化最明显。另外，改进的ＰＯＭ能较好地再现１９９８年西南季风爆发前后，南海及邻近海区表层海温的演变特征。这为以后发展区域海气耦合模式奠定了基础。
The sea state of the South China Sea and the adjacent sea area from January to August 1998 was numerically simulated using the improved regional ocean circulation model (POM) at Princeton University, USA. The main results obtained are basically the same as those obtained from ocean observations and some previous studies. The simulation results show that from January to August, the South China Sea branch of the Kuroshio is an important current in the northern South China Sea. The warm current in the South China Sea is clearly visible except for the winter months: the large-scale anticyclone warm vortex to the right of the Kuroshio exist. Among the simulated sea areas, the surface current in the South China Sea has the closest relationship with the monsoon, with the most obvious seasonal variation. In addition, the improved POM can better reproduce the evolution of surface SST in the South China Sea and its adjacent sea areas before and after the onset of the 1998 Southwest Monsoon. This laid the foundation for the development of the regional air-sea coupling mode in the future.