NCPLOT: Min Water Depth

This page illustrates the effect of the control parameter "Min_Water_Depth" of the steering file NCPLOT.DAT.

Data at places with low water coverage can be excluded from the presentation by using the parameter "Min_Water_Depth".

In comparison with the current total water depth the value "Min_Water_Depth" is used additionally to distinguish "valid" and "invalid" data. In case of Min_Water_Depth = 0.0, the data are used in respect of valid or invalid values exactly as they exists in the CF NetCDF file.

The method works only on variables that have a variable with the standard name "sea_floor_depth_below_sea_surface" as "ancillary_variable". The CF-NetCDF output of UnTRIM programs fulfills this requirement.

Impact of Min_Water_Depth on the presentation

Areas with a current water coverage less than the specified "Min_Water_Depth" value are treated as "fallen dry". Existing "valid" data at such a place become "invalid" and are not shown. This method usually improves the appearance.

Visualization of the original UnTRIM results

Min_Water_Depth = 0.000 m

Visualization with Min_Water_Depth > 0.0 m

Min_Water_Depth = 0.010 m	Min_Water_Depth = 0.025 m

Min_Water_Depth = 0.10 m	Min_Water_Depth = 0.25 m

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