欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (23): 211-217.doi: 10.11924/j.issn.1000-6850.2013-2694

所属专题： 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

高低空急流耦合对内蒙古东部持续性暴雨的触发作用

常煜 张平安 王洪丽 于春燕   

  • 收稿日期:2013-10-15 修回日期:2013-11-12 出版日期:2014-08-15 发布日期:2014-08-15
  • 基金资助:
    内蒙古自治区气象局科技创新项目“呼伦贝尔市短时临近预报平台”(nmqxkjcx201202)；内蒙古专家型暴雨团队；2012年内蒙古山洪地质灾害防治气象保障工程预报预警业务系统“强对流天气历史个例库建设研究”。

Coupling Effect of the Persistent Heavy Rainfrom the Upper-level and the Low-level Jet Streamin Eastern Inner Mongolia

  • Received:2013-10-15 Revised:2013-11-12 Online:2014-08-15 Published:2014-08-15

PDF (PC)

501

摘要： 为了研究内蒙古东部地区暴雨特征，防范暴雨引发的洪涝灾害对农业产生的影响，利用NCEP/ NCAR再分析资料、常规观测资料，对2011年7月24日—28日内蒙古东部地区持续4天暴雨天气过程进行分析和总结。结果表明：（1）此次暴雨天气过程是在鄂霍茨克海阻塞高压坝阻挡华北低槽东移形成的稳定大尺度环流背景下，伴随副热带西风锋区高低空急流耦合作用共同产生的；（2）200 hPa高空急流与850 hPa偏南低空急流的长时间维持和稳定配置产生的耦合作用，为内蒙古东部地区持续暴雨天气的形成提供了有利的动力和热力条件，触发了暴雨天气。

关键词: 基因型差异, 基因型差异

Abstract: In order to study the characteristics of rainstorm in Inner Mongolia and to guard against the impact on agriculture from flood disasters caused by rainstorm, based on the NCEP/NCAR reanalysis and the conventional observation data, the heavy rain had been analyzed in eastern Inner Mongolia during 24-28 July 2011. Results showed that: (1) north China trough was stopped by high pressure dam in the Okhotsk sea was the large scale circulation background of the heavy rain process. With the subtropical westerly frontal zone of the upper-level and the low-level jet stream coupling together. (2) Coupling effect that the upper-level jet stream of 200 hPa lever and the low- level south wind jet stream of 850 hPa lever continuing and stable coordinating provided dynamic condition and stratification conditions for the persistent heavy rain, the coupling effect was important for the heavy rain.