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利用常规气象资料、物理量场资料和大气监测自动站等资料,对2008年7月4—5日鲁东南、鲁西南～鲁中西部出现的暴雨、局部大暴雨的天气过程,从天气形势、影响系统、物理量场诊断分析等方面做了研究,通过分析:此次过程为典型的西风槽与副热带高压边缘西南暖湿气流交绥造成暴雨的天气形势,低空急流的建立、发展和维持,为暴雨区提供了强的水汽输送和能量积累;由于中、低层缺乏切变线等辐合系统,山东虽然水汽通道很好,但水汽辐合集中在局部地区,只造成局部的暴雨天气;各种能量指数对暴雨预报有一定的指导意义。
Based on the data of conventional meteorological data, physical field data and automatic monitoring station of atmospheric monitoring, the weather process of heavy rain and heavy rainstorm occurring in the southeastern Lushan, the southwestern Shandong to the central and western Shandong, from July 4-5, 2008, from weather conditions, , Physical field diagnosis and analysis. Through the analysis: The process is typical of the westerly trough and the subtropical high pressure edge of the southwest warm and humid flow caused by heavy rainfall weather conditions, the establishment, development and maintenance of low-level jet, as the rainstorm area Providing strong water vapor transport and energy accumulation. Due to the lack of convergence lines such as mid-level and low-level convergence systems in Shandong, although the water and vapor channels are good, the convergence of water vapor is concentrated in some areas, causing only heavy rainstorms. Various energy indices Rainstorm forecast has some guiding significance.