Open AccessThe importance of calibration parameters on the accuracy of the floods description in the Snyder’s model
Author(s) -
Andrzej Wałęga
Publication year - 2016
Publication title -
journal of water and land development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 16
eISSN - 2083-4535
pISSN - 1429-7426
DOI - 10.1515/jwld-2016-0002
Subject(s) - mean squared error , statistics , mathematics , calibration , sensitivity (control systems) , flexibility (engineering) , function (biology) , coefficient of determination , watershed , magnitude (astronomy) , flood myth , quality (philosophy) , computer science , geography , physics , engineering , archaeology , quantum mechanics , astronomy , evolutionary biology , electronic engineering , machine learning , biology
Comparison of quality of Snyder’s model for determination flood waves was examination in this work. Model parameters were calibrated based on objective functions: percentage error in peak flow (PEPF), percentage error in volume (PEV), peak-weighted root mean square error (PWRMSE), sum of absolute residuals (SAR) and sum of squared residuals (SSR). Quality of model was calculating by Nash-Sutcliffe efficiency coefficient E. Additionally sensitivity of a model was characterized by its flexibility. The analyses were performed in the watershed of Grabinka. It has been found that the use PWRMSE as the objective function allows to obtain the best quality results of simulation. Furthermore, Snyder’s model is flexible to the change of Cp coefficient