【作者】 王庆华； 谢晓华； 张宇昕； 李丽；

【Author】 Department of Meteorology,Linyi City,Shandong Province;

【机构】 山东省临沂市气象局；

【摘要】 本文利用2008-2015年临沂夏季(6至9月)区域自动站和国家级气象自动站小时降水资料,筛选出降水强度大于30mm/h的数据,分析了山东临沂8年来夏季短时强降水的总体变化规律、时空分布特征、影响天气系统以及产生短时强降水雨团的移动方向,并从大气环流的变化特征、降水物理机制和环境因素等方面浅析了原因。研究结果表明:临沂夏季短时强降水时空分布特征明显、不同区域短时强降水发生的概率与局地地形密切相关,所得结论对临沂地区短时强降水的短时、临近预报和相关预警信号发布工作有重要指导意义。更多还原

【Abstract】 In this paper, the data of rainfall intensity of more than 30 mm/h wer e screened by using hourly precipitation data of regional automatic station and national meteorological automatic station in Linyi summer(June to September)from 2008 to 2015, and analyzed the overall change rule, temporal and spatial d istribution characteristics, the influencing weather systems and the direction of the short-time heavy rainfall cluster of the summer short-time rain in Linyi,Shandong Province of these 8 years, and analyzed the reasons from the characte ristics of the atmospheric circulation, the precipitation physical mechanism an d the environmental factors.The results showed strong temporal and spatial dist ribution of short-time heavy rain in Linyi, the probability of short-time heavy rain in different regions was closely related to the local terrain. The conclu sions have important guiding significance to the short-time, near-forecast andr elevant warning signals of short-term heavy rainfall in Linyi area.更多还原