Optimization of Open Boundary Conditions in a 3D Internal Tidal Model with the Adjoint Method around Hawaii
Joint Authors
Zhang, Jicai
Cao, Anzhou
Lv, Xianqing
Chen, Haibo
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-31
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Based on the theory of inverse problem, the optimization of open boundary conditions (OBCs) in a 3D internal tidal model is investigated with the adjoint method.
Fourier coefficients of M2 internal tide on four open boundaries, which are regarded as OBCs, are inverted simultaneously.
During the optimization, the steepest descent method is used to minimize cost function.
The reasonability and feasibility of the model are tested by twin experiments (TEs).
In TE1, OBCs on four open boundaries are successfully inverted by using independent point (IP) strategy, suggesting that IP strategy is useful in parameter estimation.
Results of TE2 indicate that the model is effective even by assimilating inaccurate “observations.” Based on conclusions of TEs, the M2 internal tide around Hawaii is simulated by assimilating T/P data in practical experiment.
The simulated cochart shows good agreement with that obtained from the Oregon State University tidal model and T/P observations.
Careful inspection shows that the major difference between simulated results and OSU model results is short-scale fluctuations superposed on coamplitude lines, which can be treated as the surface manifestation modulated by the internal tide.
The computed surface manifestation along T/P tracks is comparable to the estimation in previous work.
American Psychological Association (APA)
Cao, Anzhou& Chen, Haibo& Zhang, Jicai& Lv, Xianqing. 2013. Optimization of Open Boundary Conditions in a 3D Internal Tidal Model with the Adjoint Method around Hawaii. Abstract and Applied Analysis،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-510791
Modern Language Association (MLA)
Cao, Anzhou…[et al.]. Optimization of Open Boundary Conditions in a 3D Internal Tidal Model with the Adjoint Method around Hawaii. Abstract and Applied Analysis No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-510791
American Medical Association (AMA)
Cao, Anzhou& Chen, Haibo& Zhang, Jicai& Lv, Xianqing. Optimization of Open Boundary Conditions in a 3D Internal Tidal Model with the Adjoint Method around Hawaii. Abstract and Applied Analysis. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-510791
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-510791