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中文摘要: 应用准地转Q矢量理论,分析了一次连续暴雨过程,共计算了13个时次的Q矢量及其散度、涡度、地转锋生函数等诊断场,得出了一些有益的结果,发现造成秋末冬初连阴雨中暴雨的内在机制,是冷暖空气相向运动,作顺时针旋转,螺旋式抬升的结果。提出了在实际预报业务中,应用Q矢量场作暴雨落区预报的着眼点。
中文关键词: Q矢量，诊断，暴雨
Abstract:Based on quasi-geostrophic Q-vector theory,a case of continuous heavy rain has been analyzed. Q-vector, vorticity and divergence of Q, geostrophic frontogenesis function have been computed in 13 times of the heavy rain case. Results show that the internal mechanics of the heavyrain is a contrary movement of warm and cold air mass with clockwise and spiral lift movement.Further more, the forecast method of heavy rain area with Q-vector field in operational forecast practice is indicated.
keywords: Q-vector,heavy rain,forecast
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引用文本：
杨小艳,曹希孝,1995.准地转Q矢量诊断场与暴雨关系的分析[J].气象,21(11):17-21.
,1995.An Analysis of the Relationship Between Quasi-Geostrophic Q-vector and Heavy Rain[J].Meteor Mon,21(11):17-21.
杨小艳,曹希孝,1995.准地转Q矢量诊断场与暴雨关系的分析[J].气象,21(11):17-21.
,1995.An Analysis of the Relationship Between Quasi-Geostrophic Q-vector and Heavy Rain[J].Meteor Mon,21(11):17-21.