【摘要】 应用非地转湿Q矢量理论对2010年6月1～2日广西一次锋面暴雨过程进行诊断分析,结果表明,500 hPa高空槽东移、850 hPa切变线南压、地面冷空气南下是此次广西前汛期锋面暴雨的主要影响系统;非地转湿Q矢量的垂直分布反映了次级环流的方向和强弱,暴雨落区位于次级环流的上升支附近;低层850 hPa等Q*x值线梯度最大区域和较强的.Q*负值区重叠的区域与未来24 h暴雨落区有很好的对应关系。更多还原

【Abstract】 The ageostrophic wet Q-vector method was applied to analyze the frontal rainstorm process on June 1-2,2010 in Guangxi.Results showed that the east movement of the upper trough at 500 hPa,the south movement of the shear line at 850 hPa and ground cold air moving southward were the main effect systems of rainstorm during the first rainy season in Guangxi;the vertical distribution of the ageostrophic wet Q-vector reflected the direction and strength of secondary circulation,heavy rain area was located in the ascending area of secondary counter circulation;there was a good corresponding relation between the overlap region of the maximum gradient region of contour at 850 hPa and stronger negative areas and the rainstorm area in future 24h.更多还原