午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

Many newgeneration weather radar sets are located in mountainous areas with complex terrain in China, and the terrain occultation results in blind zones of detection, which influences the application of radar echo data seriously. A method of using the vertical profile of reflectivity factor to fill up occultation regions of lower elevation, applicable to stratiform precipitation, is introduced, which uses the beam blockage based on DEM data to confirm the rate of echo occultation and uses the data of highelevation zero occultation regions to obtain that of the lowelevation complete occultation regions according to the changes of reflectivity with height in the vertical profile of reflectivity. Taking Hangzhou radar as an example, the results are verified through comparing the revised reflectivity and original reflectivity and comparing radar precipitation estimations before and after revision. The results show that the revised and original radar echoes have good consistency, and the revised reflectivity is better than the original in quantitative precipitation estimation.