利用美国普林斯顿大学海洋模式(POM)对1995年5月南海AXBT海洋观测资料和MISST卫星观测的海面温度进行模式四维同化分析研究。POM模式同化处理使用最优插值分析与逼近方法,从模式积分到第4年开始,使用COADS气候平均风应力场、净热通量场强迫海洋,从第5年5月开始加入1995年5月的MISST和AXBT资料同化积分30d,然后对同化结果进行分析。结果表明,资料同化可以改进模式对温度场的预报,也可改进模式对海流的模拟。分析结果还显示,1995年5月南海浅层有暖涡和冷涡形成。

In the study we used U.S. Princeton University Ocean Model with observation data assimilated in the South China Sea in May 1995. The method of assimilation used the optimum interpolation scheme to approach from analysis to observation. When Princeton Ocean Model have run to the fourth year by restore surface boundary, the wind stress and net heat fluxes of COADS were used for forcing ocean. And when the model have run to the fifth year, the AXBT and MISST data were inputted for assimitating to integrate 30 d from May 1995. Results showed that the simulation temperature and current field ware improved with assimilation, there are warm-core and cool-core eddies in South China Sea on May 1995.