收稿日期: 2009-04-28
修回日期: 2010-01-13
网络出版日期: 2010-04-10
基金资助
国家自然科学基金项目“中国近海及邻近海区海洋与地球潮汐相互作用研究”(编号：40676009);国家自然科学青年基金项目“印尼海潮波和潮混合的分析和数值研究”(编号：40606006)资助.
Accuracy Assessment of Global Ocean Tide Models Base on Satellite Altimetry
Received date: 2009-04-28
Revised date: 2010-01-13
Online published: 2010-04-10
依据152个深海验潮站与大洋岛屿地面验潮站观测得到的8个主要分潮（M2、S2、K1、O1、N2、K2、P1及Q1）调和常数，对现有7个全球大洋潮汐模式的准确度进行了检验，结果显示各模式在深海大洋区域均达到了比较高的准确度：M2分潮的潮高均方根偏差在1.0~1.3 cm之间|8个分潮的和方根偏差在2.1~2.3 cm之间，与早期的模式相比，准确度又有了进一步提高。还依据中国近海18个岛屿的调和常数对其中的5个大洋潮汐模式的准确度进行了检验，结果表明，M2分潮均方根偏差在4.4~10 cm，明显高于大洋的均方根偏差。其中日本国家天文台的潮汐模式NAO99在中国近海的结果相对较准确。
汪一航 , 方国洪 , 魏泽勋 , 王永刚 , 王新怡 . 基于卫星高度计的全球大洋潮汐模式的准确度评估[J]. 地球科学进展, 2010 , 25(4) : 353 -362 . DOI: 10.11867/j.issn.1001-8166.2010.04.0353
Tidal harmonics of 8 principal constituents (M2, S2, K1, O1, N2, K2, P1 and Q1)derived from ground observations at 152 tidal gauge stations are used to assess the accuracy of 7 global ocean tidal models. It is shown that for the deep ocean area these models have high accuracy. The root-mean-square values of tidal height differences (RMSd) are within the range from 1.0 to1.3 cm for M2, and the rootsumsquare values of the RMSd of these 8 constituents lie in the range from 2.0 to 2.3 cm. Comparison of the global tidal models to 18 offshore and island tide gauge observations in the seas adjacent to China shows that the accuracy significantly decreases. The RMSd values of constituent M2 lie in the range of 4.4 to 10 cm, which is significantly greater than that in the deep ocean area. Among these models, the model NAO99 that assimilates T/P altimeter data and tide gauge observations into a hydrodynamic model, developed by the National Astronomical Observatory of Japan, has the best accuracy for the seas adjacent to China.
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