J4 ›› 2008, Vol. 26 ›› Issue (4): 86-90.

• 业务应用技术 • 上一篇    下一篇

湿位涡分析在河北东北部暴雨预报中的应用

王 宏1 ,马凤莲1 ,王万筠2 ,彭九慧1   

  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:2008-10-27 修回日期:2008-11-28 出版日期:2008-12-30 发布日期:2008-12-30
  • 作者简介:王宏(1972-) ,女,河北省围场人,在读硕士,工程师,主要从事短期预报及研究.

Applica tion of Moist Poten tial Vortic ity Analysis in Foreca sting Heavy Rain in Northeast of Hebe i Prov ince

WANG Hong1 , MA Fenglian1 , WANGWanjun2   

  1. 1. Chengde Meteorological Bureau of Hebei Province, Chengde 067000, China;2. Tanggu Meteorological Bureau of Tianjin, Tanggu 300457, China
  • Received:2008-10-27 Revised:2008-11-28 Online:2008-12-30 Published:2008-12-30

摘要:

应用湿位涡理论,对2008年6月25日发生在河北省东北部的1次局地暴雨天气进行了诊断分析。结果表明,暴雨产生在θse线陡立密集区附近,θse线陡立密集区附近对流稳定度较小,有利于湿斜压涡度发展, M PV1“高层正值区低层负值区垂直迭加”的配置是暴雨发生、发展的有利形势,暴雨位于850 hPa上M PV1零线附近,湿位涡在850 hPa上具有M PV1 < 0,M PV2 > 0的特征,在夏季可以作为河北省北部预报暴雨的一个有效辅助工具。

关键词: 暴雨, 湿位涡, 诊断分析

Abstract:

By using the theory ofmoist potential vorticity(MPV) , a rainstorm occurred in northeast of Hebei Province on 25 June 2008 was analyzed. The results show that the heavy rain occurred in the neighborhood of the stiff and dense section of Pseudo - equivalent potential temperature lines, where the convective stabilitywas so small that itwas beneficial to the development ofmoist baroclinic vorticity. The overlapp ing of the positive and negativeMPV1 areas at the lower and upper levelwas advantageous to the development and appearance of rainstorm, and the rainstorm was located near the zero line ofMPV1. MPV1 < 0 andMPV2 > 0 at the level of 850 hPa can be a useful condition for rainstorm occurring in the north of Hebei Province.

Key words: rainstorm, moist potential vorticity, diagnostic analysis

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