Research on Raindrop Size Distribution Differences Before and After the South China Sea Summer Monsoon Outbreak in Quanzhou Area
To understand the influence of the South China Sea monsoon outbreak on the microscopic characteristics of precipitation along the southeast coast of China,the raindrop spectrum characteristics and differences of different rain in-tensity and precipitation types before and after the monsoon outbreak were studied using laser raindrop spectrometer data from 2018 to 2022 in Quanzhou,Fujian Province,and the relationship between reflectivity factor and rain intensity be-fore and after the monsoon outbreak was proposed.The results show that,on the whole,the concentration of small and medium raindrops after the monsoon outbreak is higher than that before the monsoon outbreak,but the concentration of large raindrops is lower.The difference varies with the rainfall intensity,but the overall characteristics of the difference are the same.After the onset of the monsoon,the number concentration of small raindrops and large raindrops in stratus precipitation increased significantly,while the number concentration of medium raindrops did not change significantly.For convective cloud precipitation,the number concentration of small raindrops increases after monsoon eruption,but the number concentration of large raindrops decreases significantly.The onset of monsoon also has an impact on the re-flectance factor-rainfall intensity relationship in this region.The multipliers of the two types of precipitation before the onset of monsoon are both larger than those after the outbreak,but the indices are both smaller.
Quanzhou areaSouth China Sea summer monsoonraindrop size distributionZ-R relationship
万方数据
维普
