气象科学2012，Vol.32Issue(3)：253-259,7.DOI:10.3969/2012jms.0013
对流性降水雨滴谱特征及其与雷达反射率因子的对比分析
Comparative analysis on rain spectrum characteristics of deep convective cloud and its radar reflectivity
摘要
Abstract
The data of rainstorm process during Meiyu season in Nanjing observed by the Parsivel laser precipitation particle spectrometer and s-band Doppler weather radar were used to analyze the characteristics of the microphysical parameters, average raindrop size distributions, and raindrop velocity distributions. To fit the observed raindrop size distributions, Gamma distribution is better than M-P and log-normal distribution, for estimate of the number of small rain drops and the shape of large rain drops side, then the quadratic relationship between Gamma distribution parameters μ and A was set up. We established the relationship between radar reflectivity factor and rainfall intensity, and compared echo intensity observed by radar and calculated from Parsivel, the results showed: for the rainstrom, the radar observation could underestimate the echo intensity, and with echo intensity increase, the underestimation was more obvious. After amending, the estimated precipitation by Z-I relationship was closer to Parsivel measurement, it enhanced the accuracy of precipitation estimate by Doppler radar.关键词
雨滴谱/对流性降水/雷达反射因子Key words
Deep convective cloud rain/ Rain spectrum simulation/ Radar reflectivity分类
天文与地球科学引用本文复制引用
濮江平,张昊,周晓,张卉慧,王可法..对流性降水雨滴谱特征及其与雷达反射率因子的对比分析[J].气象科学,2012,32(3):253-259,7.基金项目
国家重点基础研究发展计划(973计划)项目(2010CB950804) （973计划）
国家自然科学基金资助项目(41005074) （41005074）
解放军理工大学预研基金(20110403) （20110403）
江苏省气象科研基金项目(K200715) （K200715）
