Evaluation of Runoff Simulation Effects of the SWAT Model Driven by CMADS and Traditional Meteorological Station Data——Taking the Case Study in Kushui River Basin
To explore the runoff simulation effect of the SWAT model driven by CMADS dataset and traditional meteorological station data in the arid area where meteorological data is insufficient , the two SWAT models based on the datasets mentioned above were built separately with them being calibrated and verified under the support of the measured monthly runoff data from the hydrological station .The results showed that over the period of calibration (2008-2012), Nash-Suttcliffe efficiency coefficients of the two types of model were 0.846 and 0.642, and the coefficient of determination were 0.741 and 0.597.At the verification stage from (2013-2016), the Nash-Suttcliffe efficiency coefficients were 0.816 and 0.619 with coefficients of determination being 0.752 and 0.628 respectively.The simulation effect uncovered that the model moved by the CMADS data is more reliable than that supported by traditional meteorological data , indicating that CMADS can provide basic data and accuracy guarantee in construction of the SWAT model in the arid basin lacking meteorological data .
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