2-dimensional real time forecasting model for storm tides and its application in Hangzhou Bay
Xie Ya-li · Chinese Journal of Hydrodynamics · 2011
The most important properties of a real time forecasting model for storm tides are a quick computing speed,a wide computing range,versatility and ease of operation.Considering the coupling effect of storm surges and astronomical tides,a 2D real time forecasting model was constructed based on finite volume method(FVM) on the unstructured grids.This model could be applied to any complex computational domain with stabilization and versatility.Since the OpenMP was used to do the parallel computation,the computing speed was improved greatly.This model could be used to do the real time forecasting of the coastal storm tides in China.For example,in order to predict the storm tides in the Hangzhou Bay,a real time forecasting system for storm tides was integrated with a very wide computing range including the East China Sea,the Yellow Sea and the Bohai Sea.Based on the calibration and verification of the model by using the data of 10 typical storm tides and the corresponding astronomical tides,the model had forecasted the storm tides during Typhoon Morakot(0908#).It turned out that the real time forecasting system can meet the demands of accuracy and efficiency.It is effective in practice and good for popularization.