TY - JOUR
T1 - Sensitivity-Based calibration of the soil and water assessment tool for hydrologic cycle simulation in the cong watershed, Vietnam
AU - Anh, Nguyen Viet
AU - Fukuda, Shinji
AU - Hiramatsu, Kazuaki
AU - Harada, Masayoshi
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - For better water resources management in quality and quantity, an accurate model is needed for simulating the hydrologic cycle and water quality dynamics at a watershed scale. In this study, a semidistributed hydrologic model, the Soil and Water Assessment Tool (SWAT), was applied for hydrologic cycle assessment in the Cong Watershed, Vietnam. After model-output and accuracy-based sensitivity analyses were conducted without and with observation data, respectively, model parameters were calibrated and validated using meteorological and runoff data observed between 1961 and 1975. Model performance in annual, monthly, and daily flow simulations was assessed using the Nash-Sutcliffe Efficiency coefficient and the coefficient of determination (R2). As a result, the accuracy-based sensitivity analysis better identified the key parameters, as compared to the model output-based sensitivity analysis, resulting in better flow simulations in the Cong River. The calibrated model performed well in hydrologic cycle simulations in the CongWatershed, suggesting the applicability of the SWAT model.
AB - For better water resources management in quality and quantity, an accurate model is needed for simulating the hydrologic cycle and water quality dynamics at a watershed scale. In this study, a semidistributed hydrologic model, the Soil and Water Assessment Tool (SWAT), was applied for hydrologic cycle assessment in the Cong Watershed, Vietnam. After model-output and accuracy-based sensitivity analyses were conducted without and with observation data, respectively, model parameters were calibrated and validated using meteorological and runoff data observed between 1961 and 1975. Model performance in annual, monthly, and daily flow simulations was assessed using the Nash-Sutcliffe Efficiency coefficient and the coefficient of determination (R2). As a result, the accuracy-based sensitivity analysis better identified the key parameters, as compared to the model output-based sensitivity analysis, resulting in better flow simulations in the Cong River. The calibrated model performed well in hydrologic cycle simulations in the CongWatershed, suggesting the applicability of the SWAT model.
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U2 - 10.2175/106143015X14338845156948
DO - 10.2175/106143015X14338845156948
M3 - Article
C2 - 26237690
AN - SCOPUS:84946021737
VL - 87
SP - 735
EP - 750
JO - Water Environment Research
JF - Water Environment Research
SN - 1061-4303
IS - 8
ER -