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Extending Flood Forecasting Lead Time In A Large Watershed By Coupling Wrf Qpf With A Distributed Hydrological Model, Ji Li, Yangbo Chen, Huanyu Wang, Jianming Qin, Jie Li, Sen Chiao

Faculty Publications, Meteorology and Climate Science

Long lead time flood forecasting is very important for large watershed flood mitigation as it provides more time for flood warning and emergency responses. The latest numerical weather forecast model could provide 1–15-day quantitative precipitation forecasting products in grid format, and by coupling this product with a distributed hydrological model could produce long lead time watershed flood forecasting products. This paper studied the feasibility of coupling the Liuxihe model with the Weather Research and Forecasting quantitative precipitation forecast (WRF QPF) for large watershed flood forecasting in southern China. The QPF of WRF products has three lead times, including 24, 48 …