摘要
使用伴随同化方法探讨了四种底摩擦系数处理方法并模拟了渤黄东海的M2分潮.理想实验表明:伴随同化方法有很强的反演底摩擦系数的能力;为了得到较好的反演结果,反演策略必须与给定的分布一致;如果给定分布很复杂,则需要复杂的反演策略.实际实验表明,底摩擦效应与地形密切相关,而海洋地形十分复杂,故需要较多的独立的底摩擦系数才能得到较好的模拟结果.本文的第四种方法将每一点均作为独立的底摩擦系数,在实验中获得了成功,验证了这种方法的合理性和有效性.
Based on the simulation of the M2 tide in the Bohai, Yellow and East China Seas, numerical experiments are made to study 4 strategies on the bottom friction coefficient （BFC） in a numerical adjoint model. In order to make a better simulation, the strategy must be consistent with the given BFC distribution. The real bottom friction decided by ocean topography is very complicated and an independent BFC is required. The fourth method which takes the BFC in each grid point as an independent BFC simulates practical experiments best and demonstrates the reasonability and efficiency of this method.
出处
《计算物理》
EI
CSCD
北大核心
2006年第6期731-737,共7页
Chinese Journal of Computational Physics
基金
the National Basic Research Programof China(2005CB422308)
the specialized research fund for the doctoral programof higher education(20050423007)
the Foundationfor Open Projects of the Key Lab of MOEfor Physical Oceanography(200305).
关键词
底摩擦系数
潮汐模型
伴随同化方法
反演
bottom friction coefficient
tidal model
adjoint assimilation method
inversion
