TUFLOW HR Output: Difference between revisions
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=Water Level Interpolation Method=
Similar to the standard output, the HR output also need to interpolate cell centre water level to cell corners. However, the interpolation methods for the standard output (<font color="blue"><tt>Map Output Corner Interpolation </tt></font> <font color="red"><tt>== </tt></font> <font color="black"><tt>Method C</tt></font>) can produce "bumpy" HR water level output in direct rainfall model along narrow streams. This often happens between fully wet cells and sheet flow cells, as the water level is linearly interpolated
The corner water level interpolation methods for the standard output (Map Output Corner Interpolation ==) applies a minimum corner water level of “corner elevation + cell wet/dry depth” if all the surrounding 4 cells are wet. However, this may produce “bumpy” water level outputs along narrow streams in a direct rainfall SGS model between sheet flow cells and fully wet cells when using the new high resolution output. This is caused by applying a linear water level interpolation between SGS cells that have a non-linear minimum SGS elevation as illustrated below.▼
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interpolated from the surrounding SGS sampled elevations.
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