热带气象学报2018，Vol.34Issue(2)：209-216,8.DOI:10.16032/j.issn.1004-4965.2018.02.007
双线偏振雷达在广州“3.19”降雹过程中的应用分析
RESEARCH ON GUANGZHOU "3.19" HAIL EVENT BASED ON OBSERVATION BY DUAL-POLARIZATION WEATHER RADAR
摘要
Abstract
The characteristics of synoptical background and radar parameters of a hail event on 19 March 2016 are analyzed based on Guangzhou dual-polarization doppler radar parameters,Huadu wind profiler and NCEP reanalysis data.The results show that the intensity of radar echo is generally above 50 dBz,and the echo top is always above 10 km.What's more,it appears a significant three body scattering spikes,cyclonic convergence and storm top divergence.Hail storm can be identified by the polarization parameters (such as ZDR,ρHV,KDP).Hail storm usually exist in the area with strong reflectivity、low value of ZDR and ρHV.The typical value of ZDR is usually between-1.0 and 0.2 and the value ofρHV is between 0.7 and 0.9.Identified by ρHV and ZDR is more effective in lower elevation than in higher elevation,while KDP is not always well in hail recognition.For scare hail storm cases,hail warning methods based on dual-polarization doppler radar parameters are still limited,which maybe lead to empty warning and forecasting,so more further research works are needed.关键词
冰雹/双线偏振天气雷达/多普勒天气雷达/雷达参量Key words
hail/Dual-polarization weather radar/Doppler weather radar/Radar parameters分类
天文与地球科学引用本文复制引用
苏冉,廖菲,周芯玉..双线偏振雷达在广州“3.19”降雹过程中的应用分析[J].热带气象学报,2018,34(2):209-216,8.基金项目
广州市科技计划项目(201604020069、201607020043) （201604020069、201607020043）
气象行业专项(GYHY201406003) （GYHY201406003）
广州市气象局科技项目(GRMC2017Q12)共同资助 （GRMC2017Q12）
