An evaluation of boundary condition specification for a littoral hydrodynamic model

Littoral hydrodynamic models are valuable tools for characterizing near shore waves and currents. There are a number of ways to prescribe boundary conditions for the model. A tide model is used to obtain astronomic boundary conditions, or among other sources, a regional model can provide time series boundary conditions. We investigate the differences imposed by these two types of boundary conditions for 4 model cases-two-and three-dimensional cases at two locations. Furthermore, we investigate how changing the temporal resolution of the time series boundary condition and how varying the horizontal resolution of the regional model affects the model results.