Comparative Assessment of SWAT Model Performance in two Distinct Catchments under Various DEM Scenarios of Varying Resolution, Sources and Resampling Methods
作者： Manish Kumar Goyal , Venkatesh K. Panchariya , Ashutosh Sharma , Vishal Singh
DOI: 10.1007/S11269-017-1840-1
关键词:
摘要: The aim of this study is to evaluate the performance hydrological model - Soil & Water Assessment Tool (SWAT) in two distinct catchments, under various Digital Elevation Model (DEM) scenarios varying resolution (from 30 m 300 m), sources (SRTM, ASTER and CartoDEM) resampling methods (nearest neighbour, bilinear interpolation, majority cubic convolution) available with ArcGIS software package. A comparison was made between response highly elevated Himalayan Upper Teesta catchment peninsular monsoon dominated Narmada India. assessed subsequently compared based on statistical measures such as coefficient determination (R2) Nash-Sutcliffe Efficiency (NSE), for monthly runoff sediment yield. sensitivity outputs runoff, yield, Total Nitrogen (TN) Phosphorous (TP) towards DEM studied Relative Difference (RD). key findings are: 1) topographic characteristics were found be more sensitive catchment; 2) simulating unaffected both catchments due changes method; 3) affected all catchment, while changing method have catchment.
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