WMS:GSSHA Model Linkage

The GSSHA Model Linkage dialog, accessible from the GSSHA Job Control dialog, allows you to link your current GSSHA model to other GSSHA models. If you have a parent (regional) model in the WMS interface and you want to link this parent model to a child (inset) model, select the options shown below:

File:GsshaInsetModelLinkToChildMask.png

GSSHA Inset model dialog, showing the option to link the existing model to a child model

Note that if these options are selected, WMS writes the appropriate cards to both the parent model and the child model, using the child model’s mask file as the output mask, so the boundary data is output from the parent model and is read into the child model.

If you’d like to output data from the parent model at specific XY points, you would define the point locations in the GSSHA coverage in the map module and mark these locations as Model linkage output points in the GSSHA point properties dialog, as shown below:

Option in the GSSHA point attributes to output model linkage data at a point

Then, select the option in the GSSHA Model Linkage dialog to output XY point-specific data from the parent model, as shown below:

GSSHA Inset model dialog showing the option to link a child model to XY point-specific data

In either case (whether using the mask option or the XY point option), you need to define the name of your child project or you will get an error when saving your project. If you’re using the XY point option, you’ll get an error when saving if you have not defined any model linkage output points in the GSSHA coverage.

If you have a child model read into WMS and you want to define how it’s linked to a parent model, you can toggle the option to link the model to a parent project and define the appropriate options. Once again, you must define a filename for the parent model.

A single model can also be used as both a parent and a child model but turning on both the link to child and the link to parent toggles in this dialog.