| 暴雨回波跟踪及临近预报初探 |
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| 引用本文： | 汤达章,傅德胜.暴雨回波跟踪及临近预报初探[J].南京气象学院学报,1992,15(1):66-72. |
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| 作者姓名： | 汤达章 傅德胜 |
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| 作者单位： | 南京气象学院
(汤达章，博德胜)，重庆市气象局(张亚平) |
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| 摘 要： |
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| 关 键 词： | 暴雨 天气雷达 预报 回波 |
A PRELIMINARY STUDY ON THE ECHO TRACKING AND NOWCASTING OF RAINSTORMS |
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| Tang Dazhang,Fu Desheng,Zhang Yaping Nanjing Institute of Meteorology Meteorological Bureau of Chongqing City.A PRELIMINARY STUDY ON THE ECHO TRACKING AND NOWCASTING OF RAINSTORMS[J].Journal of Nanjing Institute of Meteorology,1992,15(1):66-72. |
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| Authors: | Tang Dazhang Fu Desheng Zhang Yaping Nanjing Institute of Meteorology Meteorological Bureau of Chongqing City |
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| Institution: | Tang Dazhang;Fu Desheng;Zhang Yaping Nanjing Institute of Meteorology Meteorological Bureau of Chongqing City |
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| Abstract: | Based on the PPI echo data obtained by digital weather radar in the rainstormarea and after filtering the weak echoes which have minor effects on the measurement ofrainfall,the movement of the strong echo blocks in the area is tracked by means of themoment invariant method. Results from the experiments on two cold-front heavy rainprocesses show that when the interval of radar detection is 20 or 30 minutes, the aver-age accuracy by this method reaches as high as 91%. In addition, on the basis of theabove experiment results and using two or three pictures in the PPI echo data, experi-ments are performed on the linear extrapolation method by which the locality of thestrong echo block in the next hour is forecasted. The results are rather inspiring. |
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| Keywords: | rainstorm weather radar nowcasting |
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