Methods and Techniques of MultiscaleComposite Rainfall Nowcasting
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Abstract:
The nowcasting methods and techniques for largearea rainfall, such as Meiyufront heavy rainfall, are studied on the basis of CHINA/SA radar data. The techniques of multiscale filtering, segmentation, and radar echo matching are discussed according to the characteristics of heavy rainfall echoes. By using the life time of a certain scale echo to restrict the lead time, a forecast can be made for the rainfall at this scale, and total rainfall is obtained through composing. The results show that the accuracy of rainfall forecasting is improved, to some extent, while considering the differences in life time between the echoes of different scales and the moving characteristics.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.