Estimating open boundary conditions from coastal tidal observations by adjoint approach |
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Authors: | Zhu Jiang Zeng Qincun Guo Dongjian Liu Zhuo |
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Institution: | (1) Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029 Beijing, China |
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Abstract: | A numerical study for estimating the tidal open boundary conditions of a shelf current modrl from tb coastal tidal observations
is presented. The method is based on the optimal control/adjoint method. A lrast square fitting of the model state to simulated
data is used. Two ideal domains and coastlines are considered. Using the IAP shallow. water model and its adjoint model, some
identical twin experiments are carried out to test efficiency and lirnilsd of the method. The results show that the adjoint
method can efficiently estimate the open boundary conditions well for gulf/bay like domains. The adjoint method seems to have
great potential to improve the accuracy of tide and shelf current modeling in coastal regions.
Project supported hy the National Natural Science Fuundation of China (Grant No. 49376256) |
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Keywords: | adjoint method open boundary conditions shelf current model |
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