全球大洋潮汐模式在南海的准确度评估  

Accuracy Assessment of Global Ocean Tide Models in the South China Sea

作　　者：高秀敏[1] 魏泽勋[1] 吕咸青[2] 王永刚[1] 杨扬[3] 

机构地区：[1]国家海洋局第一海洋研究所海洋环境与数值模拟研究室,山东青岛266061 [2]中国海洋大学物理海洋实验室,山东青岛266100 [3]国家海洋信息中心,天津300171

出　　处：《海洋科学进展》2014年第1期1-14,共14页Advances in Marine Science

基　　金：国家高技术研究发展计划项目--南海及周边海域风浪流耦合同化精细化数值预报与信息服务系统(2013AA09A506);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(40676009);国家重点基础研究发展计划项目--南海环流和海峡水交换对海气相互作用的影响(2011CB403502);青岛市科技计划基础研究项目--渤黄东海潮汐潮流预报系统(11-1-4-98-jch);中央级公益性科研院所基本科研业务费专项资金资助项目--海洋环流建模研究(2007-31)

摘　　要：采用南海海域60个验潮站和22个TOPEX/Poseidon卫星高度计轨道交叉点的调和常数资料,对比了TPXO7.2、GOT00.2、NAO.99b和DTU10四种全球大洋潮汐模式M2、S2、K1、O1四个主要分潮调和常数在南海的准确度。为了准确评估这四种大洋潮汐模式在南海不同区域的准确度,本研究将南海分成了8个区分别进行了对比。结果表明,南海北部和东部区域,4个分潮都是DTU10准确度最高;南部区域,M2和O1分潮GOT00.2的偏差最小,S2和K1分潮DTU10的偏差最小。总体而言,在进行南海潮汐数值模拟选择开边界条件时,建议以DTU10模式为主,并利用GOT00.2模式作适当调整。还简单分析了南海M2、S2、K1、O1四个主要分潮的潮汐分布特征。The harmonic constants of four tidal constituents M2, S2, K1, O1 of the global ocean tide models TPXO 7.2, GOT00. 2, NAO. 99b and DTU10 are validated comparing to the observed data at 60 tide gauge stations and 22 T/P satellite altimeter crossover points in the South China Sea. In order to give ac-curate estimate of the four tide models in different parts of the South China Sea, we divide the South China Sea into eight sub-areas, in each of which the comparison of accuracy is carried out separately. The results show that in the northern and eastern sub-areas of the sea the four tidal constituents of DTU10 have the highest accuracy. And in the southern sub-area of the sea the M2 and O1 constituents of GOT00.2 and the S2 and K1 constituents of DTU10 have the smallest deviation. For selecting the open boundary conditions for the numerical simulation of tides in the South China Sea, therefore, the model DTU10 should be con- sidered first and the model GOT00.2 can be used for making appropriate adjustments. The distribution features of the four tidal constituents M2 ,S2, K1, O1 in the South China Sea are also analyzed briefly.

关 键 词：大洋潮汐模式 南海 验潮站 卫星高度计 

分 类 号：P731.23[天文地球—海洋科学]