POD-DEIM Based Model Order Reduction for the Spherical Shallow Water Equations with Turkel-Zwas Finite Difference Discretization

Figure 4

First 30 points selected by DEIM for the nonlinear functions 𝑁₁₃ and 𝑁₂₃.

(a) First 30 DEIM points for nonlinear function 𝑁₁₃

(b) First 30 DEIM points for nonlinear function 𝑁₂₃