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《Meteorological Monthly》 2009-06
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Multi-scale Characteristics Analysis of Liuzhou Server Heavy Rainfall in June,2007

Yang Chun1,2 Chen Yun2,1 Fang Zhifang1 Li Zechun2(1.Chengdu University of Information Technology,Chengdu 610225;2.National Meteorological Center)  
Based on multiple meteorological data,including NCEP 1°×1° reanalysis data,routine-observational data,automatic weather station data,Doppler radar data and FY-2C satellite TBB data,the multi-scale characteristic of the server heavy rain happened in Liuzhou during 12-13 June 2007 was analyzed and its mechanism was also discussed.The results show that:because of the guidance function of east plateau low trough on 500hPa,the cold air gone south.The quasi-stationary front moved from Guizhou to Guangxi and "the front-low trough situation" formed at ground surface.The heavy rain developed in the 850hPa low trough,the center of heavy rain had a better relation to the meso-β-scale low vortex disturbance.The precipitation systems were the convective cloud clusters from south Guangxi and MCC near the frontal surface.Liuzhou heavy precipitation was created by two rain clusters.Because of the train effect of precipitation echo and ground mesoscale shear line,one of rain clusters had heavy intensity and long persistent time,this was a main reason which Liuzhou server heavy rainfall produced.
【Fund】: 国家重点基础研究发展规划项目(2004CB418307);; 国家自然科学基金(40675059);; 国家气象中心自筹项目(ZK2007-1401)共同资助
【CateGory Index】: P458.121.1
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