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中文摘要: 应用非地转湿Q矢量理论对2003年1月5～6日云南冬季的一次强降水过程进行诊断分析，结果表明：500hPa青藏高原横切变、快速东移的南支槽、低层700hPa西南急流、地面强冷锋是此次云南冬季强降水的主要影响系统；非地转湿Q矢量流场的辐合中心(辐合线)与强降水区吻合；近地面800hPa锋生函数场正值区的变化较好地反映了锋面的强度，锋生函数正值区范围与降雪区域对应较好；700hPa非地转湿Q矢量散度场辐合区与云南冬季强降水的产生及强度正相关。
中文关键词: 非地转湿Q矢量，冬季，强降水，影响系统
Abstract:A diagnosis of a heavy rainfall from Jan.5 to Jan.6,2003 is made with the Non geostrophic WetQ-vector(Q*) theory. The results show that the transverse shear line over the Qingzang Plateau and the trough eastward at the 500hPa, southwesterly jet at the 700hPa, and heavy cold front on the surface are the important influencing systems. The region of heavy rainfall has a good relation withQ*vergence center or line. The changes ofQ*frontogenesis function at the 800hPa reflect the intensity of front,and the region magnitudes ofQ* frontogenesis function could be used to locate the snowfall area.Q*divergence at the 700hPa has positive correlation with the development and the intensity of heavy preciptitation in winter in Yunnan.
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基金项目:云南省“十五”科技攻关 2001GN43项目资助
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引用文本：
郭荣芬,李英,杨向东,周翠芳,2005.非地转湿Q矢量在云南冬季强降水中的分析应用[J].气象,31(2):12-16.
,2005.Non-geostrophic WetQ-vector Analysis and Application of Heavy Precipitation in Winter in Yunnan[J].Meteor Mon,31(2):12-16.
郭荣芬,李英,杨向东,周翠芳,2005.非地转湿Q矢量在云南冬季强降水中的分析应用[J].气象,31(2):12-16.
,2005.Non-geostrophic WetQ-vector Analysis and Application of Heavy Precipitation in Winter in Yunnan[J].Meteor Mon,31(2):12-16.