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投稿时间：2005-09-19 修订日期：2005-12-06
投稿时间：2005-09-19 修订日期：2005-12-06
中文摘要: 利用常规探空和地面实测资料,以发生在2001年7月26—27日山西省晋中市的一次区域性暴雨为例,对准地转Q矢量和非地转湿Q矢量在暴雨诊断中的应用进行了定量对比分析,结果表明:(1)Q矢量对暴雨的预报有一定的指示作用,降水前期700hPa诊断效果最好,但在暴雨的强度和落区上存在明显偏差。而湿Q矢量在各层对暴雨均表现出良好的诊断特性,其散度辐合区与暴雨区有较好的对应关系,其强锋生出现6小时后开始产生强降水,且暴雨区与强锋生中心基本吻合,700hPa表现尤
中文关键词: Q矢量，锋生函数，暴雨，定量比较
Abstract:Based on some routine observation when a regional storm rain in Jinzhong, Shanxi Province during 26—27 July 2001, the application of quasi-geostrophic Q- and wet-Q-vector are made. The analysis shows that (1) the quasi-geostrophic Q-vector is a good indicator for the heavy rain forecast specially at 700hPa level in the beginning stage of the rainfall, while the wet-Q-vector has a good diagnostic property on each level. (2) The distribution of Q-vector frontogenesis function has typical quasi-geostropic characteristic, but wet-Q-vector ones has apparent mesoscale characteristic. So quasi-geostropic Q-vector adapt to study of atmospheric motion associated with synoptic scale system,and wet-Q-vector adapt to the secondary circulation triggered by synoptic scale system.
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引用文本：
赵桂香,程麟生,李新生,2006.Q矢量和湿Q矢量在暴雨诊断中的应用比较[J].气象,32(6):25-30.
,2006.Comparison and Application of Q- vector and Wet-Q-vector to Diagnosis of Storm Rain[J].Meteor Mon,32(6):25-30.
赵桂香,程麟生,李新生,2006.Q矢量和湿Q矢量在暴雨诊断中的应用比较[J].气象,32(6):25-30.
,2006.Comparison and Application of Q- vector and Wet-Q-vector to Diagnosis of Storm Rain[J].Meteor Mon,32(6):25-30.