Application of adjoint assimilation technique in simulating tides and tidal currents of the Bohai Sea, the Yellow Sea and the East China Sea

作者：Cheng Yongcun^*; Lu Xianqing; Liu Yuguang; Xu Qing

来源：High Technology Letters, 2007, 13(1): 58-64.

• Adjoint assimilation technique
• Harmonic constant
• Tidal current
• Tidal wave

Considering the interaction of different tidal waves, an adjoint numerical model is developed to simulate M2, S2, K1and O1tidal waves in the Bohai Sea, the Yellow Sea and the East China Sea (B-Y-E) simultaneously. Compared with previous researches, by using the adjoint assimilation technique to inverse open boundary conditions and bottom friction coefficients based on altimetric data from TOPEX/Poseidon (T/P) and tidal gauges data, the precision of the numerical simulation is significantly improved. Selecting 14 days of simulated results after the initial warming run to conduct harmonic analysis, the results can show the characteristics of M2, S2, K1and O1tidal wave systems perfectly in B-Y-E. Compared with 9 current stations, the calculated harmonic constants of tidal currents for M2and K1are in good agreement with the observed ones.

• 出版日期2007