卫星高度计数据提取中国海潮汐信息及其在西北太平洋的若干应用研究

Harmonic Tidal Analysis over the China Seas and Its Applications in the Northwest Pacific Ocean by Means of Altimetril Data

基于70PEX/POSEIDON卫星高度计资料,利用j,v潮汐模型和调和分析法提取中国浅海潮汐信息,与TOPEX/ POSEIDON卫星自带的全球潮汐模式CSR3.0和验潮站资料分别进行定性和定量的对比,说明在中国浅海的计算结果优于全球潮汐模式。利用提取的中国海潮汐信息对TOPEX/POSEIDON海面高度异常资料进行了修正,并通过TOPEX/POSEI- DON和ERS-1/2三星融合数据对计算结果进行质量评估。研究结果表明:在中国浅海.通过改善潮汐修正模式,TOPEX/ POSEIDON单星反演的海面高度异常数据质量已经可以达到融合产品的水准。结合卫星海表温度数据,利用时滞相关估计技术,研究中国海和西北太平洋的海面高度异常与赤道东太平洋Ni(?)o3区域海表温度之间关系.并成功预测1997/1998 El Ni(?)o/La Ni(?)a后的第一次El Ni(?)o事件。

Using j and v tidal models and harmonic analyses to obtain the harmonic constants of main tidal components in the China seas from TOPEX/POSDEIDON data,verifing the results with the global tidal model CSR3.0 qualitatively and data from tide gauge stations quantitatively,the paper shows that the results comput- ed here are more reasonable and are better than the results of the global tidal model for the China seas.Modify- ing the sea level anomaly by tidal height calculated from TOPEX/POSEIDON data,comparing the sea level anomaly calculated from single satellite altimeter TOPEX/POSEIDON and that from merging the data of three satellite altimeters TOPEX/POSEIDON and ERS-1/2,we show that the quality of sea level anomaly calculated from TOPEX/POSEIDON data for the China seas is up to that from the merged dataset.Also studied is the re- lationship between the sea level anomaly in the Northwest Pacific and the SST in the Ni(?)o3 region,and the first El Ni(?)o/event after the 1997/1998 El Ni(?)o/La Ni(?)a event is successfully predi cted.