气象水文海洋仪器2012，Vol.29Issue(4)：11-16,6.
两次下击暴流事件的多普勒天气雷达资料分析
Analysis on Doppler weather radar of two downburst events
摘要
Abstract
Two downburst events in Anhui on June 6th,2003and in Jiangsu on July 25th,2007were analyzed respectively based on Doppler radar data collected from Hefei and Yancheng radar sites.A serial of severe storms are growing out of multicell storms,accompanied with a shear line on the ground and sufficient moisture is provided by southwesterly flow on June 6th,2003.Another severe storm is growing out of two new cells triggered by the crushed bow-echo storm,and sustained by new cells from the gust front in front of the bow-echo on July 25th,2007.The results show that the obvious dropping of reflectivity factor core or cell top can produce downward tilt airflows at middle levels in the storms,which can be used to issue the downburst warning ;a downburst may initiated if a storm encounters with a shear line ;if C-VIL(cell-vertical integrated liquid water content) and CM(centroid of mass) keep stable in 6min,a downburst will generate during the following VCP(vertical coverage pattern) collection with 6min warning.关键词
下击暴流/切变线/VIL/多单体风暴/单体顶高Key words
downburst/shear line/VIL/multicell storm/cell top分类
信息技术与安全科学引用本文复制引用
杜文婷,黄兴友,黄铃光,严洪梅..两次下击暴流事件的多普勒天气雷达资料分析[J].气象水文海洋仪器,2012,29(4):11-16,6.基金项目
国家自然科学基金重点基金项目“气象多普勒雷达测量近地面层大气折射率场的研究（40775029）”资助 （）
