黔北一次低涡切变系统单多普勒雷达资料分析(英文)Doppler Radar Data Analysis of A Low-shear Vortex System in Northern Guizhou
李明元,张沪生
摘要(Abstract)：
利用遵义CINRAD/CD多普勒雷达资料并结合其他资料分析了2008年7月10日发生在黔北地区的冰雹大风、短时强降水天气。结果表明,该系统是低涡切变带有冷空气南压过境影响所致;回波单体初期发展沿切变线排列,并在发展剧烈的回波所在处产生冰雹天气;降雹前出现最强回波60～65dBz,降雹时低仰角回波强度跃增到55～60dBz,回波高度11～15km,VIL值>35kg/m2;波分布有涡旋带状特征,当涡旋中心移向原有回波时,回波剧烈增强,产生持久深厚的辐合中气旋,地面出现冰雹大风;仁怀北部乡镇降雹和短时强降水可能与此区域左倒U型地形有关;湄潭永兴和鱼泉、仁怀学孔和喜头的回波是超级单体回波,其余各地降雹回波为多单体强回波。关键词低涡切变;多普勒雷达;回波特征
关键词(KeyWords)： 低涡切变;多普勒雷达;回波特征
基金项目(Foundation):
作者(Author): 李明元,张沪生
参考文献(References)：
- [1]SUN JH,ZHANG XL,QI LL,et al. A study of vortex and its me- soscale convective system during China heavy rainfall experiment and study in 2002[J]. Chinese Journal of Atmospheric Sciences, 2004( 5) : 675 -691. ( in Chinese) .
- [2]PAN QX,WANG B,SONG QK. The process analysis of heavy rain- fall in the south of Guizhou on August,16th[J]. Yunnan Geograph- ic Environment Research,2008( S1) : 100 -105. ( in Chinese) .
- [3]DU Y,LI QJ,ZHAO XW,et al. A preliminary analysis on a rain- storm weather process in Puan County Guizhou[J]. Journal of Guizhou Meteorology,2008( 4) : 20 -21. ( in Chinese) .
- [4]ZHANG XR,TAO JJ,YAN JC,et al. Synoptic analysis of a low whirlpool shear type-hail course with continuity in midsummer of 2004[J]. Journal of Natural Disasters,2007( 1) : 31 37. ( in Chi- nese) .
- [5]ZHANG TF,JIN GY,LI Y. Analysis of Yunnan heavy rainfall caused by low vortex shear[J]. Meteorological Science and Technology, 2004( S1) : 8 -14. ( in Chinese) .
- [6]SHI CJ,BAI H. Cause analysis of a heavy rain arousing flood on Jun 26th in Sandu County[J]. Journal of Guizhou Meteorology, 2008( 1) : 24 -25. ( in Chinese) .
- [7]LIAO YF,TANG XX,CHEN Y,et al. The origin analysis of a torren- tial rain in changed city on May,13th,2002[J]. Atmosphere,2009 (5) :42 -48,132. ( in Chinese) .
- [8]QIU YW,SHENG H,LIU RR. Analysis of the forming of the heavy rainstorm in Jun 7th,2004 over Guilin City[J]. Meteorological, Hydrological and Marine Instruments,2009 ( 1) : 87 92. ( in Chi- nese) .
- [9]ZHANG TF,LU YB,PU GM. Mesoscale analysis of a Yunnan se- vere precipitation event arose from low-voxtex shear[J]. Meteoro- logical Monthly,2003( 12) : 29 -33. ( in Chinese) .
- [10]LIAO YZ. A forming of mesoscale convective storm and CINRAD echo features analysis[J]. Meteorological Science and Technolo- gy,2007( s1) : 70 -73,90. ( in Chinese) .
- [11]WANG WT,LI ZR,XU QY,et al. Characteristics of new genera- tion doppler weather radar echoes for a severe vortex rainstorm [J]. Meteorological Science and Technology,2009( 5) :533 -537, 643. ( in Chinese) .
- [12]YU XD,YAO XP,XIONG TN,et al. The Principle and Application of Doppler Radar[M]. Beijing: Meteorological Publisher,2006. ( in Chinese) .