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《Meteorology and Disaster Reduction Research》 2018-02
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Error Analysis of Waterlogging Depth using Maximum Precipitation fitting in Fuzhou City

Yao Linta;Sun Yunfan;Zheng Yingqing;Lin Ling;Lin Jin'gan;Lai Shaojun;Fuzhou Meteorological Bureau;  
Based on the 2015-2016 waterlogging data and meteorological data of Fuzhou city,the formation of waterlogging and the relationship between maximum precipitation and the waterlogging depth were discussed.The fitting effect of waterlogging depth was evaluated using liner equation and mean absolute error.The results showed that:1)In Fuzhou,the sudden causes of waterlogging occupied 26%,which mainly resulted in the difficulty of urban pipeline network data updating,while the non-sudden causes accounted for 74%.2)For three kinds of different weather systems,the average absolute error of fitting in the rainy season was the smallest,and for afternoon thunderstorm it was the largest.3)After returning the negative fitting values of waterlogging depth to zero and setting the threshold,the fitting result was in good agreement with the real.4)The fitting error was smaller based on the latest data.
【Fund】: 福建省福州市气象局科研专项(编号:201712)
【CateGory Index】: P426.6;TU992
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