Daily runoff simulation in Poyang Lake Intervening Basin based on remote sensing data

Due to the frequent water exchange and turbulence between Poyang Lake and Yangtze River, the measured runoff hydrograph at the Hukou outlet control station is unable to be directly used in hydrological model calibration. As a result, the rainfall runoff relationship and water budget analysis in Poyang Lake regions is an unsolved problem so far. In this study, the basin area analogue and water budget methods was used to modified runoff hydrograph at the Hukou, and multiple-input single-output system model was used to derive intervening basin runoff. The Variable Infiltration Capacity (VIC) distributed hydrological model based on different types of remote sensing data was used to simulate daily runoff in the ungauged Poyang Lake Intervening Basin (PLIB). The comparison of estimated and simulated daily runoff hydrographs shows that the VIC model is performed relatively well. It is proved that with the help of remote sensed data, important hydrological characteristics of the PLIB can be reproduced and predicted.