【摘要】 基于无结构网格有限体积法的正模型和伴随数据同化模型,建立了风应力系数反演表达式,将风应力系数的确定变成依赖于区域内观测值的数值迭代过程,实现了风应力系数确定的自动化,并成功进行了概化河口一系列风应力系数反演的伴随同化实验,反演得到的结果精度较高,实验结果表明:1)伴随法反演风应力系数是合理可行的;2)充分的观测数据能够提高反演的精度;3)风速在10 m/s或15 m/s的情况下,对于风应力系数反演的结果影响不大。更多还原

【Abstract】 Based on the adjoint data assimilation model and the positive model of unstructured triangular meshes and finite volume method,a formula for inversing wind drag coefficient is developed.The wind drag coefficient is automatically calculated by the numerical iteration process of intra-region observations.A series of adjoint data assimilation numerical experiments of generalized estuary are carried out successfully,indicating that:1)the method is correct and effective;2) the enough observed data can improve the inversion precision;3)the wind velocities of 10 m/s or 15 m/s have little influence on the inversion result of wind drag coefficient.更多还原