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本工作较详细地分析、比较了１９８６～１９８９年间热带太平洋环流数值模拟结果与相应的观测资料。作为第一部分，本文给出由中国科学院大气物理研究所自由表面海洋环流模式模拟得到的热带太平洋海面起伏与热带太平洋１８个海岛站水位计和美国地球卫星（Ｇｅｏｓａｔ）观测资料间的比较。结果表明，模式成功地模拟出与１９８６－１９８７ＥｌＮｉ ｏ而和１９８８ＬａＮｉ ａ事件相联系的热带太平洋水位场时空演变。如１９８６年下半年暖水在日界线附近堆累和水位上升；１９８６年底这一高水位区以Ｋｅｌｖｉｎ波形式迅速向东太平洋和南美沿岸地区传播，且该地区水位场演变呈双峰结构。模式海面起伏与１８个海岛站间平均相关系数高达０．７９，与其平均误差为４．５ｃｍ；与Ｇｅｏｓａｔ观测相比，模式海面起伏相关系数的区域平均值为０．３６；文中还讨论了对模式的进一步改进工作和海面起伏观测资料在自由表面海洋环流模式中的同化应用等问题。
This work is analyzed in detail, comparing the numerical results of the tropical Pacific circulation from 1986 to 1989 and corresponding observation data. As the first part, this paper gives a comparison of the tropical Pacific sea surface undulations simulated by the Free Surface Ocean Circulation Model of the Institute of Atmospheric Physics, Chinese Academy of Sciences with the observed data of 18 island stations in the tropical Pacific Ocean and the Geosat data. The results show that the model successfully simulates the temporal and spatial evolution of the tropical Pacific water level associated with the 1986-1987 El Niño and 1988 LaNi a events. For example, in the second half of 1986, the warm water accumulated near the daily limit and the water level rose. At the end of 1986, the high water level zone spread rapidly to the eastern Pacific and South American coastal areas in the form of Kelvin waves, and the water level field in the area developed a bimodal structure. The average correlation coefficient between sea surface undulations and 18 island stations was as high as 0.79, with an average error of 4.5 cm. Compared with the Geosat observation, the regional average of the sea surface correlation coefficient was 0.36. The further improvement of the model and the assimilation and application of the sea surface undulation observation data in the free surface ocean circulation model.