摘要
2003年6月28日山东德州发生了一次降雹持续时间长、危害严重的强降雹天气过程。利用MICAPS、探空、NCEP资料,分析了降雹前的天气形势、能量场特征、含水量场。根据两部多普勒天气雷达资料,分析了雹云的演变过程及流场结构。研究表明,降雹前在降雹区上空西边低层存在高能舌,在中高层西边存在负能量平流或负能量平流中心。此次超级单体风暴过程由单个单体发展而来,具有强超级单体风暴的典型特征。该超级单体的移动方向在盛行风向右侧约20°左右,属于右移风暴。
A severe hailstorm occurred near Dezhou, Shandong province on 28 June 2003. The synoptic situation, energy field and water vapor content field before the hailfall are analyzed by using the data of MICAPS, Rawinsonde observation and grid-point field from NCEP. The evolution process and the structure of the hail cloud are also analyzed on the basis of two Doppler weather radars. The results show that before hailfall, there is a tongue of high energy at the low level, and negative energy advection or a center of negative energy advection in the mid- and upper-level over the west of the hailfall area. The observation of Doppler radar showed that the supercell storm developed from a singlecell storm with the typical features of the supercell storm. Meanwhile, the moving direction of the supercell storm was about 20° in the right of its dominating wind direction, so it belongs to a right moving supercell storm.
出处
《气象》
CSCD
北大核心
2006年第9期9-16,i0001,共9页
Meteorological Monthly
基金
国家自然科学基金项目<我国雹云结构和防雹机理的研究>(40275001)的资助。
关键词
多普勒雷达
冰雹云
右移风暴
Doppler radar hailstorm right moving storm
