黔东南一次大暴雨过程雷达回波特征分析
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摘要
利用常规气象资料、地面区域自动站降水资料及雷达资料对2015年6月17—18日黔东南暴雨过程进行了分析。结果表明:1热带降水型回波连续、依次经过同一地区的"列车效应"为此次暴雨产生的直接原因;2速度图上显示"逆风区"与强回波中心、雨强大值区有很好的对应关系;3中层冷空气入侵,低层西南暖湿气流建立及加强,低层风切变存在有利于触发强对流天气的发生发展。
Based on the conventional observation data,the automatic station precipitation data and Doppler Radar Data,the heavy rainfall event occurred on 16- 18 Jun 2015 in Qian Dongnan,Guizhou Province,was analyzed,the results show that: 1The " train effect" caused by tropical precipitation echoes went through the same area one by one continuously was the direct cause of the heavy rain process. 2It can be seen on the Doppler velocity chart that the strong echo centers and the severe rainfall intensity centers were closely connected with the adverse wind area. 3The invasion of cold air in middle- level,the establishment and strengthening of warm and moist southwest flows and the wind shear in low- level were conductive to trigger the occurrence and development of strong convective weather.
Based on the conventional observation data,the automatic station precipitation data and Doppler Radar Data,the heavy rainfall event occurred on 16- 18 Jun 2015 in Qian Dongnan,Guizhou Province,was analyzed,the results show that: 1The " train effect" caused by tropical precipitation echoes went through the same area one by one continuously was the direct cause of the heavy rain process. 2It can be seen on the Doppler velocity chart that the strong echo centers and the severe rainfall intensity centers were closely connected with the adverse wind area. 3The invasion of cold air in middle- level,the establishment and strengthening of warm and moist southwest flows and the wind shear in low- level were conductive to trigger the occurrence and development of strong convective weather.
引文
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[12]刘小弟,汤达章.层状晴空回波在临近预报中应用综述[J].安徽农业科学,2010,38(12):6 271-6 274.
[2]赵玉广.一次大暴雨天气过程不同阶段的多普勒雷达资料分析[C].2006年灾害性天气技术论文集[A],74-81.
[3]赵静,青泉,顾清源.一次对流性强降雨过程的雷达特征分析[J].高原山地气象研究,2010,30(2):46-50.
[4]田密,张剑秋,张杰.C波段多普勒雷达观测暴雨灾害过程的分析[J].高原山地气象研究,2012,32(3):22-27.
[5]陈永仁,李跃清,刘慧君,等.一组雷达预警指标在2013年短时强降水中的应用分析[J].高原山地气象研究,2014,34(1):22-28.
[6]池再香,白慧,黄红,等.夏季黔东南州局地暴雨与西太副高环流的关系[J].高原气象,2008,27(1):176-183.
[7]周艳,白慧,蒙涛.2010年6月23—24日区域性暴雨天气诊断分析[J].贵州气象,2010,34(增刊):36-39.
[8]顾欣.黔东南州一次连续暴雨过程分析[J].贵州气象,1999,23(6):6-7.
[9]张沛源,陈荣林.多普勒速度图上的暴雨判据研究[J].应用气象学报,1995,6(3):373-378.
[10]胡明宝,高太长,汤达章.多普勒天气雷达资料分析与应用[M].北京:解放军出版社,2000:25-55.
[11]胡志群,汤达蕈,梁明珠,等.用改善的EVAD技术和变分法计算大气垂直速度[J].南京气象学院学报,2005,28(3):344-350.
[12]刘小弟,汤达章.层状晴空回波在临近预报中应用综述[J].安徽农业科学,2010,38(12):6 271-6 274.