一次蒙古冷涡影响下宁夏强对流天气分析

2004年6月14、15日连续2 d宁夏大部地区出现了强雷阵雨天气,引黄灌区局部地区遭受冰雹袭击。利用常规气象资料、多普勒雷达产品等资料,对此次过程进行了天气学分析,分析表明这是一次典型的蒙古冷涡旋转东移南压造成的宁夏连续性强对流天气过程。并根据一般性雷雨与伴有冰雹的强雷雨天气发生时雷达回波的差异,统计得到宁夏发生强对流性天气的监测预警指标,同时利用宁夏中尺度区域模式MM5预报产品对其相关物理量进行了模拟分析,得到了有价值的结果。

Analysis of a Severe Convection Process Influenced by Mongolia Cold Vortex

A 2 day's continuous severe thunderstorm occurred in most areas of Ningxia on June 14th and 15th, 2004, part of the Yellow River irrigation region has been struck by hail. By using the routine meteorological data and doppler radar products and so on, a meteorological analysis of this process has been done, the analysis shows that: this is a typical continuous severe thunderstorm process in Ningxia which resulted from the rotational eastwards and southwards Mongolia cold vortex. From the radar echo difference between general thunderstorm and severe thunderstorm with hail, the monitoring and forecasting index of Ningxia severe convection weather has been gained with statistics. By using the forecasting products of Ningxia meso-scale model MM5, a simulative analysis has been done on it's related physical quantities, which has gained a valuable results.