地面资料在侦测暴雨天气过程中的应用  

Application of Surface Automatic Meteorological Station Data to Detecting Rainstorm Processes

作　　者：马文彦[1] 冯新 杨芙蓉 

机构地区：[1]武汉中心气象台,武汉430074 [2]湖北省襄樊市气象局,襄樊441021

出　　处：《气象》2010年第1期41-48,共8页Meteorological Monthly

基　　金：湖北省气象局科技发展基金项目"地面资料在侦测暴雨天气过程中的应用研究"2008Y06资助

摘　　要：利用地面常规观测资料和自动站加密温度资料以及卫星云图资料,分析了2005年7月6—7日和7月9—10日发生在江淮流域及其附近的两次暴雨过程的地面要素分布特征,发现强降水带分布在非锋性斜压带和斜压槽附近。然后利用NCEP再分析资料,用第二类热成风螺旋度和非地转湿矢量诊断解释了非锋性斜压带和斜压槽产生强降水的动力机制,结果表明在地面非锋性斜压带和斜压槽处易发生锋生和斜压现象,从而诱发强降水。The distribution of the surface elements of two rainstorm processes is analyzed during 6-7 and 9 -10,July 2005 by using the surface automatic meteorological station data and satellite data.It shows that the strong rainfall belt lies near the non-frontal baroclinic zone and baroclinic troughs.Using the NECP data, the dynamic mechanis of the non-frontal baroclinic zone and baroclinic troughs causing strong precipitation are revealed by the thermal wind helicity of the second kind and the ageostrophic wet Q-vector,it indicates that frontogenesis and baroclinic zone easily occur in the surface non-frontal baroclinic zone and baroclinic troughs,and then they may induce the strong precipitation.

关 键 词：非锋性斜压带 斜压槽 第二类热成风螺旋度 非地转湿Q矢量 

分 类 号：P[天文地球]