Estimation of Open Boundary Conditions for an Internal Tidal Model with Adjoint Method: A Comparative Study on Optimization Methods

Figure 1

Experiment design. (a) Plane view of the computing domain and observation locations. The black dots and the black open circles represent the locations of the observations O1 and O2, respectively. The white dots and the white open circles denote the open boundaries and the open boundary points where the tidal force is installed, respectively. The white dashed line indicates the position of the longitudinal section which will be shown in (b). (b) Bottom topography along the dashed line shown in (a) and the location of the undisturbed interface between the two layers shown as the dashed line. (c) Prescribed spatial distribution of OBCs (Fourier coefficient 𝑎 specially here) along the eastern boundary.