J4 ›› 2009, Vol. 27 ›› Issue (1): 29-33.

• 论文 • 上一篇    下一篇

河北承德一次飑线过程的多普勒雷达资料分析

王 宏1 ,马凤莲1 ,王万筠2   

  1. 1. 河北省承德市气象局,河北 承德 067000; 2. 天津市塘沽区气象局,天津 塘沽 300457
  • 收稿日期:2009-01-09 修回日期:2009-02-26 出版日期:2009-03-31 发布日期:2009-03-30
  • 作者简介:王宏(1972 - ) ,女,工程师,在读硕士,现从事短期预报工作. E - mail: whlzqlgd@sina. com

Doppler Radar Da ta Ana lysis of a Squa ll L ine Process in Chengde of Hebe i Prov ince

WANG  Hong1, MA Feng-Lian1, WANG Mo-Jun2   

  1. 1. ChengdeM eteorological B ureau of Hebei Province, Chengde 067000, China;
    2. Tanggu M eteorological B ureau of Tianjin, Tanggu 300457, China
  • Received:2009-01-09 Revised:2009-02-26 Online:2009-03-31 Published:2009-03-30

摘要:

利用河北省承德多普勒雷达的反射率因子、径向速度、垂直积分液态含水量(V IL)等产品,结合环流形势和自动站资料,对2008年6月25日发生在承德市境内的一次飑线天气过程进行了分析,初步探讨了飑线天气过程的多普勒雷达回波演变特征。分析结果表明:大风位于弓形飑线回波的凸起部位。负速度中心值逐渐增大到> 27 m / s且逐渐靠近雷达,预示大风天气的出现。V IL值的剧减、跃增和持续高的ET与大风、冰雹等强对流天气有一定的对应关系。

关键词: 多普勒雷达, 飑线, 回波

Abstract:

Abstract:By using the reflectivity, radial velocity,Vertically Integrating L iquid (V IL) Water Content and other p roducts of Chengde
Dopp ler radar, a squall line p rocess happened in Chengde on 25 June 2008 was analyzed combining circulation situation and automatic
weather station data. Itwas discussed how Dopp ler radar echoes of the squall line in Chengde evolved. The results show the strongwind
locates in bulge spot of the bow squall line echo. The negative center value of radial velocity increased gradually then more than 27 m /
s and app roached the radar,which indicated that the strong wind would occur. V IL value increasing rap idly, reducing sharp ly and the
continued high Echo Top s (ET) value have corresponding relationship swith the strong wind, hail and so on.

Key words: Dopp ler radar, squall lin, echo

中图分类号: