多普勒速度图上的暴雨判据研究

A STUDY OF HEAVY RAIN SIGNATURE RECOGNITION BY RADAR VELOCITY IMAGES

文章研究了多普勒天气雷达速度图上的暴雨判据（即“逆风区”概念）的空间结构。并对１９８９～１９９２年ＣＡＭＳ多普勒天气雷达观测到的“逆风区”进行了统计分析。还利用１９９３年实际观测资料对它的预报准确率和概括率进行了检验，其预报准确率为７５％，概括率为８６％。

The spatial structures of heavy rain by Doppler radar velocity images[i.e AdverseWind Regions(AWR )] were studied using Doppler radar observation data。 AWRswere analysed by statist ical data in Beijing-Tianjin-Hebei mesoscale experiment baseduring the period of 1989～1992.According to AWR occurence,the forecasting fortorrential rain could be made。Its forecast accuracy and probability were tested byCAMS Dopplei radar data in 1 993.Theaccuracy was 75%and the generalization forAWRwas 86%。