Journal of Arid Meteorology ›› 2011, Vol. 29 ›› Issue (1): 75-81.

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Contrast Analysis of Two Heavy Rainstorm in Different Seasons of 2010 in Liaocheng of Shandong Province

XU Juan,WANG Jian,JI Fanhua,LV BoLI Nan   

  1. Liaocheng Meteorological Bureau of Shandong Province,Liaocheng 252000,China.
  • Received:2010-11-15 Revised:2011-01-07 Online:2011-03-31 Published:2011-03-31

2010年山东聊城市2次大暴雨形成机制的对比分析

徐娟王健纪凡华吕博李楠   

  1. 山东省聊城市气象局,山东聊城252000.
  • 作者简介:徐娟(1978-),女,山东聊城人,硕士,工程师,主要从事天气预报工作.E-mail:xjsea2000@yahoo.com.cn

Abstract:

A contrast analysis of two heavy rainstorm occurred in Liaocheng of Shandong Province in different seasons was made from synoptic situation,physical quantity field and radar echoes characteristic.The results show that the summer rainstorm usually accompanied by strong convective weather,mid-cyclone and adverse wind areas.When the heavy rainstorm occurred in autumn,the intensity of radar echoes was not very strong but lasted longer,and some physical quantity indexes related to heavy rainstorm were lower in autumn than those of in  auummer.The forecast of heavy rainstorm in autumn is difficult.

Key words: summer rainstorm, autumn rainstorm

摘要:

从环流形势、物理量场、雷达回波特征方面对比分析了山东省聊城市不同季节2次大暴雨的形成机制。结果表明:夏季大暴雨具有降水量大、短时性强、降水强度较强、危害大等特点。夏季大暴雨能量场强,多伴有强对流天气发生;大暴雨存在中气旋和逆风区,并且对应于暴雨和灾害性天气的发生区域;秋季大暴雨发生时,雷达回波强度不是很强,但持续时间比较长;秋季大暴雨发生时,物理量场上一些暴雨指标比夏季大暴雨稍低;大暴雨难以预报。

关键词: 夏季暴雨, 秋季暴雨, 对比分析

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