球坐标系下MASNUM海浪数值模式的建立及其应用  

MASNUM ocean wave numerical model in spherical coordinates and its application

作　　者：杨永增[1] 乔方利[1] 赵伟[1] 滕涌[1] 袁业立[1] 

机构地区：[1]国家海洋局第一海洋研究所

出　　处：《海洋学报》2005年第2期1-7,共7页

基　　金：国家S863项目"模块化巨浪遥感信息提取与复合分析技术"(2001AA633070);国家重点基础研究发展规划项目"渤黄东海环流及其变异预测数值模式和海洋大气灾害应用"(G1999043809)

摘　　要：为开展海浪对海洋上混合层的搅拌混合作用及其对海气界面通量的影响等研究,在LAGFD WAM区域海浪数值模式基础上建立了球坐标系下的全球海浪数值模式.重点导出了球坐标系下的海浪能量谱平衡方程及其复杂特征线方程,该组方程包含了背景流场对波动传播的调整、波动沿大圆传播的折射等.数值积分则采用复杂特征线嵌入计算格式.初步数值模拟结果表明,该海浪全球数值模式能够较为精确地刻画海浪的动力过程.In order to evaluate the wave-induced mixing in the upper ocean and the impact of surface waves on ocean-atmosphere fluxes, a global wave numerical model in spherical coordinates is developed based on the previous LAGFD-WAM regional model. The wave energy spectrum balance equation and its complicated characteristic equations are derived in spherical coordinates. In these control equations, the modulation of background current to wave evolution and the refraction of waves propagating along great circles are included. The characteristic inlaid method is applied to integrating the wave energy spectrum balance equation. Primary calibration indicates that the global wave model can describe the dynamical processes of ocean surface gravity waves.

关 键 词：海浪数值模式 球坐标 特征线计算格式 

分 类 号：P731.22[天文地球—海洋科学]