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投稿时间:2008-12-06 修订日期:2009-11-25
投稿时间:2008-12-06 修订日期:2009-11-25
中文摘要: 为准确分析和识别超折射雷达回波,发挥多普勒天气雷达效益,利用石家庄CINRAD/
SA型多普勒天气雷达资料,结合探空实况对2005年11月19—21日华北平原大雾天气过程的超
折射回波进行了射线追踪分析。结果表明:华北平原大雾天气有利于大气波导的形成,产生
3层模式超折射回波。超折射回波使得雷达的目标视位置与实际位置产生偏差,特别是对
雷达测高影响较大。超折射回波一般出现在大雾天气的发展和维持过程中,为进行雷达空间
定位和华北平原大雾天气的监测、预报提供新的技术手段和科学依据。
中文关键词: 射线追踪, 超折射, 大气波导
Abstract:In order to identify and analyze superrefraction echoes accurately, a
nd take great advantage of the Doppler radar, based on the Doppler radar data in
Shijiazhuang and the sounding data, the ray path of the superrefraction radar
echoes in the dense fog weather occurring in North China Plain during 19-21 Nove
mber, 2005 is studied. The results indicate that, the dense fog weather is favor
able for the occurrence of atmospheric duct and the formation of 3 layer mode su
perrefraction echoes. The superrefraction radar echoes bring about measuring err
ors, especially in the height. The superrefraction radar echoes occur when the f
og develops or maintains. These present the new means and lay the scientific bas
is for the spatial location by radar, and the monitoring and forecast of dense
fog weather in North China Plain.
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基金项目:中国气象局新技术推广项目:河北平原大雾能见度与生消时间预报方法研究(CMATG2008M34)资助
引用文本:
赵瑞金,李江波,2010.一次华北平原大雾天气CINRAD/SA雷达超折射回波的射线追踪分析[J].气象,36(2):62-69.
ZHAO Ruijin,LI Jiangbo,2010.Ray Tracing of Superrefraction Echoes in the Dense Fog Weather Occurring in North China Plain by CINRAD/SA Data[J].Meteor Mon,36(2):62-69.
赵瑞金,李江波,2010.一次华北平原大雾天气CINRAD/SA雷达超折射回波的射线追踪分析[J].气象,36(2):62-69.
ZHAO Ruijin,LI Jiangbo,2010.Ray Tracing of Superrefraction Echoes in the Dense Fog Weather Occurring in North China Plain by CINRAD/SA Data[J].Meteor Mon,36(2):62-69.