摘要
利用多普勒雷达三维拼图产品和石家庄新乐雷达站单多普勒雷达产品,对比分析了2008年6月23日发生在河北省中南部的一次强对流天气过程。结果表明:反射率因子和回波顶高拼图产品展现了整个对流系统自西向东发展、演变的全貌,为全面跟踪灾害性天气影响的时间和地点以及短时、临近预警提供有利依据。同时,根据反射率因子剖面图,不仅可以提前10—20 min对冰雹或大风天气做出预警,而且还可以从回波垂直剖面的形状区别冰雹或者大风,明显的回波悬垂、弱回波区和回波墙是发布冰雹预警的充分而非必要条件。
A strong convective weather process was analyzed in southern Hebei province on June 23,2008 based on the products of CINRAD 3D mosaic and single Doppler radar in Xinle station.The results indicate that the 3D products of the radar reflectivity factor（Z） and echo tops（ET） can show the movement and development of convective system from west to east,which can provide the references for disaster weather warning.At the same time,strong winds or hail weather can be warned ahead of 10—20 minutes according to the reflectivity profile,and hail and strong wind are distinguished based on the shapes of the vertical profile.The obvious echo hanging,weak echo area and echo wall are the sufficient rather than necessary conditions to issue hail early warning.
出处
《气象与环境学报》
2009年第5期18-23,共6页
Journal of Meteorology and Environment
基金
气象行业专项"热带西太平洋观测试验与我国高影响天气可预报性研究"资助
关键词
多普勒雷达
三维拼图产品
强对流天气
灾害预警
Doppler radar
3 D mosaic products
Strong convection weather
Disaster warning
