太平洋潮波特征比较-海洋预报

太平洋潮波特征比较

单位：1. 解放军理工大学气象学院南京 211101;
2. 南京河海大学南京 210098;
3. 国家海洋信息中心天津 300171

分类号：P731

出版年·卷·期（页码）：2008·25·第二期（42-50）

摘要：

本文对TOPEX/Poseidon高度计资料直接分析得到4个主要分潮(M₂、K₁、S₂和O₁)的调和常数,将其与全球大洋潮波模式TPXO6.2的模拟结果以及太平洋中48个验潮站观测资料的分析结果进行了系统比较,得出高度计资料直接分析结果与潮波模式模拟结果总体比较一致。模拟出的无潮点的位置和高度计资料直接分析结果有差异,且K1和O1分潮差异较大。与站点结果比较表明TPXO6.2模式模拟结果与验潮站观测结果的振幅绝对偏差小于2cm的站点的百分比达到85%,迟角绝对偏差小于40°的站点的百分比达到70%以上,比高度计资料直接分析结果精确;矢量均方根误差比较表明,太平洋中部结果比整个太平洋结果准确,太平洋矢量均方根误差的值和其他研究者、其他模式的结果近似。

The harmonic constants of the four dominant constituents M₂,K₁,S₂ and O₁ obtained from the analysis of TOPEX/Poseidon altimeter data are compared with the simulation results of global ocean tide model TPXO6.2 and observation of 48 tide gauge in the Pacific Ocean.It is suggested that the result of the data analysis basically agrees with that of model simulation but the position of the tide-free points of the results of the analysis altimeter data and the TPXO6.2 model are not match very well.85% of the distribution of the amplitude absolute difference is less than 2cm and 70% of the distribution of the phase lag absolute difference is less than 40°.It is showed from the vector rms that the result of harmonic constants is better in the middle of the Pacific than in the whole Pacific Ocean.When the vector rms of the stations in the Pacific Ocean compared with the vector rms from other models,it is found that the results are quite near.

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