青岛城区一次冰雹过程分析  

Analysis of the Hail Process in Qingdao Urban Area

作　　者：江敦双 高荣珍 彭义峰 孙贵平 

机构地区：[1]青岛市气象局,青岛266003 [2]萍乡市气象局,江西萍乡337002

出　　处：《气象与环境科学》2009年第B09期42-45,共4页Meteorological and Environmental Sciences

摘　　要：利用常规探测和区域自动站、雷达等资料,分析了2007年5月28日发生在青岛市的冰雹天气过程,结果表明:这次冰雹天气是在高中低3层都有冷涡系统且呈前倾槽结构的天气背景下发生的;925 hPa的西南急流和中高层的不稳定都有利于冰雹云的形成;冰雹发生前,青岛城区上空低层大气逆温、逆湿,中层有干冷空气入侵,为冰雹云形成提供了有利的位势不稳定层结;造成5月28日青岛城区降雹的直接影响系统是超级单体雷暴,冰雹云的移动和冰雹落区与地面中γ尺度气旋相对应。The hail process, which occurred in Qingdao city on May 28, 2007 is analyzed by using conventional probing data, regional automatic station and radar data. The result indicates that there existed cold vortex system in the lower, middle and upper tropospheric layer and the synoptic background was manifested as forward tilting trough when the hail occurred. The southwest jet on 925 hPa and instability in the middle and high atmosphere are favorable for the formation of hail cloud. Before the appearance of hail, lower tropospheric atmosphere above the Qingdao urban area is characterized by temperature inversion and moisture inversion, and the intrusion of dry-cold air in the middle tropospheric layer supply favorable potential instability stratification to the formation of hail cloud. The hail event is influenced di- rectly by supercell thunderstorm. The movement of hail cloud, and hail area are consistent with the surface meso-γ scale cyclone.

关 键 词：冰雹 中γ尺度气旋 逆温 逆湿 

分 类 号：P458.121.2[天文地球—大气科学及气象学]