ZHOU Nie,HOU Jing-ming,SU Feng,et al.High-resolution Simulation and Forecasting of Urban Waterlogging Based on Land-atmosphere Coupling[J].China Water & Wastewater,2021,37(21 21):131.
High-resolution Simulation and Forecasting of Urban Waterlogging Based on Land-atmosphere Coupling
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
21 21
Page:
131
Column:
Date of publication:
2021-11-01
- Keywords:
- urban waterlogging forecasting; GRAPES_MESO model; hydrological hydrodynamic model; numerical simulation; rainfall correction; high resolution
- Abstract:
- The high-resolution urban waterlogging forecasting can reflect the urban waterlogging more accurately, help to release the early warning and forecast information in time, and reduce the loss caused by the urban waterlogging. Based on the rainfall forecast correction module and the high-precision hydrodynamics model and coupling with the GRAPES_MESO numerical weather forecast model, an urban waterlogging simulation forecast model based on land-atmosphere coupling was constructed. The prediction performance of the model in Xixian New Area of Shaanxi Province was tested through three measured rainstorm events. The model could predict the urban waterlogging factors efficiently and accurately. The average time for calculating a 15 h rainfall-waterlogging process was 0.82 h, and the average error of predicting the waterlogging area was less than 10% and the average error of the water volume was less than 20%, indicating that the prediction performance of the model was good. The model can efficiently forecast the urban waterlogging, and the simulation results have certain significance to guide the urban disaster prevention and mitigation.
Last Update:
2021-11-01