Author: Amos Lawless
Software requirements: Fortran 90
The cost function convergence for test case 1 of the program.
This is an incremental 4D-Var assimilation applied to a one-dimensional shallow water system for the flow of a fluid over an obstacle in the absence of rotation. The nonlinear system can be modified to use either a Perturbation Forecast Model (PFM) or a Tangent Linear Model (TLM) as the linearisation method.
The code can be found here. The documentation to run the model can be found here.
