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About CBarlow

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  1. I'm reviewing a 1D-2D model using XP2D and the final CME% is less than 3%, but the peak CME% is higher than 3% (there are several models with different return periods and the errors range from 4-9%). I'm reading that a healthy model should have both peak and final CME% less than 3% - is that true in all cases? If so, I've having trouble figuring out how to reduce the peak CME. The model simulates runoff at an airport. It uses direct rainfall and combines 2D surface flow with 1D storm drains. It uses 15-ft cells and a timestep of 0.6 seconds. The 2D domain has an inflow boundary on one side and a normal depth boundary condition around most of the rest of the model boundary to allow 2D flow to drain either offsite or into the ocean. The 1D pipes outfall into the ocean and have been given a head boundary equal to MHHW level. I've attached the MB files that were written out for one of the models. Any thoughts on what might be causing the high peak CME% and how we might resolve it? Thanks! Clark data_MB.csv data_MB2D.csv