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Figure 15. Coarse grid used for initial stage of wave hindcast study 



data input for the model was obtained from the Mass Storage Facility and inter- 

 polated from the standard 1-deg spacing to fit the fmer array of input grid points. 

 The WIS model then was run for the months covering mid-October through mid- 

 December 1994, using additional wind information over the month of September 

 1994 for model spin-up. This stage was considered a deepwater application, and no 

 water depths were required to complete model input. 



After calibration of the hindcast model for the initial stage grid, additional runs 

 were completed to establish boundary input for the more refined final stage grid. 

 Spacing for this grid was 1 min (0.017 deg). Global wind fields could not be inter- 

 polated with accuracy due to the fine grid spacing. This appeared not to present a 

 problem, however, since the distance between input boundary condition points and 

 the output location was deemed small enough to make omission of the winds 

 acceptable. The shallow- water nature of this application made it necessary to 

 include water depths over the entire final stage grid. Output was obtained seaward 

 of the St. Paul Harbor main breakwater. Peak wave periods and significant wave 

 heights were obtained covering the period mid-October 1994 through mid- 

 December 1994. 



Chapter 2 Monitoring Program 



21 



