Tidal adjoint assimilation with the TOPEX/Poseidon altimetry data in the Huanghai and Bohai Seas

QIU Zhong-feng; HE Yi-jun; L&#220; Xian-qing

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QIU Zhong-feng, HE Yi-jun, LÜ Xian-qing. Tidal adjoint assimilation with the TOPEX/Poseidon altimetry data in the Huanghai and Bohai Seas[J]. Haiyang Xuebao, 2005, 27(4): 10-18.

Citation:

QIU Zhong-feng, HE Yi-jun, LÜ Xian-qing. Tidal adjoint assimilation with the TOPEX/Poseidon altimetry data in the Huanghai and Bohai Seas[J]. Haiyang Xuebao, 2005, 27(4): 10-18.

QIU Zhong-feng, HE Yi-jun, LÜ Xian-qing. Tidal adjoint assimilation with the TOPEX/Poseidon altimetry data in the Huanghai and Bohai Seas[J]. Haiyang Xuebao, 2005, 27(4): 10-18.

Citation:

QIU Zhong-feng, HE Yi-jun, LÜ Xian-qing. Tidal adjoint assimilation with the TOPEX/Poseidon altimetry data in the Huanghai and Bohai Seas[J]. Haiyang Xuebao, 2005, 27(4): 10-18.

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Tidal adjoint assimilation with the TOPEX/Poseidon altimetry data in the Huanghai and Bohai Seas

1.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
3.
Ocean University of China, Qingdao 266003, China

Received Date: 2004-04-28
Rev Recd Date: 2005-04-10

Abstract

Abstract

Tidal constituents,which are extracted from about 10-year TOPEX/Poseidon altimetry data along track points,are assimilated into an two-dimension non-linear tidal model with the adjoint assimilation method.Tidal constituents M₂,S₂,O₁ and K₁ are simulated in the Huanghai and Bohai Seas,then Co-tidal maps are obtained.The bias between calculations and observations are also provided and the results tell that calculations agree well with observations.Moreover,there are two experiments in this paper:one is tooptimize different coefficient,the other is to assimilate different data.The first experiment shows that it is better to optimize the open boundary conditions and the bottom friction coefficients at the same time than to optimize the open boundary conditions only.The second experiment shows that the results are better when assimilating the altimetry data and the tidal constants from tidal gauges simult aneously than assimilating anyone separately.The results also show that it is useful to simulate the tidal system in the Huanghai and Bohai Seas by assimilating T/Paltimetry data and tidal constants from tidal gauges with adjoint assimilation method.
- adjoint assimilation,
- TOPEX/Poseidon altimetry,
- tide

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References(19)

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