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| Quantitative precipitation deviation correction of EC model based on frequency matching |
| Zhou Wei1,4, Wei Qing2, Yang Kangquan1,4, Chen Maoqiang3 |
1. Sichuan Provincial Meteorology Observatory,Chengdu 610072;
2. Sichuan Lightning Protection Center,Chengdu 610072;
3. Neijiang Meteorology Bureau,Neijiang 641000;
4. Heavy Rain and Drought-Flood Disaster in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 610072 |
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Abstract In order to improve the prediction effect of the model,this paper uses the EC model precipitation forecast data and the actual precipitation data from May to September 2018 to 2020 in the southern Sichuan Basin,and uses frequency matching method to correct,analyze and test the 24-hour cumulative precipitation of the EC model.The results show that when the precipitation threshold is less than 25.0 mm,there is obvious wet deviation in EC quantitative precipitation forecast.On the contrary,there is weak dry deviation.The results of this study provide support for improving the precipitation forecast ability of related regions.
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Received: 10 March 2023
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2024, Vol. 41 
