Overview
Normally, the 2D model is cold-started from 0 elevation everywhere. In this case, since the model grid in the Delaware Bay covers the elevation up to 10 meters above MSL in the watershed and up to 40 meters above MSL in the upstream Delaware River, it will take a lot of rainfall or point source inputs to inundate these area. To avoid this, A thin layer (2 cm) of water is imposed at the grid points above MSL: eta0 = -(grid_depth)+0.02. In the future, we recommend eta0 = -(grid_depth)-1.0e-6, which raise the initial water level just below the ground and should work similar to the current setup.
Generating nudging files
A group of scripts are provided under this folder (HYCOM_nudge/) for automatically generating elev.ic. You can put the folder into your run directory, then do:
[your_run_dir]$ cd Elev_IC/
[your_run_dir/Elev_IC]$ ./auto.pl
This will make a elev.ic and save a copy in your run directory. You can read "auto.pl" to see what steps are involved.
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