海洋气象学报2024，Vol.44Issue(3)：23-36,14.DOI:10.19513/j.cnki.hyqxxb.20220807001
强冰雹和强降水超级单体风暴双偏振特征差异性
Difference in dual-polarization signatures between a severe hail supercell storm and a heavy precipitation supercell storm
摘要
Abstract
Using Qingdao dual-polarization Doppler radar data,conventional observations and data of regional meteorological observing stations,the differences in polarimetric signatures are analyzed between a severe hail supercell storm,which occurred in Zhucheng,Shandong on 16 August 2019,and a heavy precipitation supercell storm,which occurred in Gaomi,Shandong on 3 August 2020.The results are shown below.(1)The common features include ZDR arc on the updraft side in the low level of storm,as well as ZDR ring,deep ZDR column and KDP column around the strong updraft regions.(2)The major differences are as follows.The Zhucheng severe hail supercell storm has stronger maximum reflectivity,higher height of maximum reflectivity,stronger mesocyclone rotation intensity and storm top divergence intensity,but lower ZDR column and KDP column,and narrower ZDR column and KDP column.The strong mesocyclone rotation intensity and storm top divergence intensity are conducive to the overhang of storm core and the growth of hails.The wider and deeper updraft in Gaomi supercell storm brings the liquid or small wet ice particles with higher concentration to a higher height,resulting in higher ZDR column and KDP column.(3)The vertical distribution of humidity and the vertical profile of wind play a key role in the storm intensity and weather situation.The Zhucheng supercell storm occurs under the conditions of drier vertical humidity and northwest airflow,and results in severe hails;the Gaomi supercell storm occurs under the conditions of wetter vertical humidity and southwest airflow,and generates high-intensity precipitation.关键词
超级单体/双偏振/微物理/差异性Key words
supercell/dual-polarization/microphysical/difference分类
天文与地球科学引用本文复制引用
刁秀广..强冰雹和强降水超级单体风暴双偏振特征差异性[J].海洋气象学报,2024,44(3):23-36,14.基金项目
山东省自然科学基金项目(ZR2022MD088,ZR2022MD035) （ZR2022MD088,ZR2022MD035）
山东省气象局科研项目(2019sdqxz01) （2019sdqxz01）
