J4 ›› 2011, Vol. 29 ›› Issue (2): 236-239.

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Application Analysis of T639 Product on a Heavy Rainfall Process in Central Tianshan Mountain

GUO Jinqiang1,WANG Xiaojuan2,ZHANG Zhixiong3   

  1. 1. Shihezi Meteorological Bureau of Xinjiang,Shihezi 832003,China; 2. Key Laboratory of Oasis Ecology Agriculture of Xinjiang Production and Construction Corps,Shihezi 832003,China;3. Dushanzi Meteorological Bureau of Xinjiang,Dushanzi 833600,China)
  • Received:2010-11-29 Revised:2011-03-15 Online:2011-06-30 Published:2011-06-30

T639 数值预报产品在天山中部一次强降水过程的应用分析

郭金强1 ,王肖娟2 ,张治雄3   

  1. 1. 新疆石河子地区气象台,新疆石河子832003; 2. 新疆石河子大学,新疆兵团绿洲生态农业重点实验室,新疆石河子832003; 3. 新疆独山子气象局,新疆独山子833600
  • 作者简介:郭金强( 1976 - ) ,甘肃静宁人,硕士,工程师,主要从事短期气候预测和绿洲生态农业研究. E - mail: GJQ7@163. COM
  • 基金资助:

    新疆气象局科研基金项目“石河子垦区冰雹落区及发生时间的临近预警分析和研究”( 201015) 资助

Abstract:

Based on“T639”0 field forecast product,the heavy rainfall weather occurred on May 25 - 26,2009 in central Tianshan  Mountains was analyzed. The results indicated that the convergence line,shear line and the southwest jet at the level of 700 hPa and 850 hPa were the direct influence system of this weather event,the convergence of southwest jet and the cold air formed a strong convergence of power and moisture,which played an important role for this weather process. Heavy rainfall occurred in the strong energy front,high humidity area and water vapor flux convergence zone. The effect of high and low level jet stream and middle - high frontal zone resulted in this weather event.

Key words: central Tianshan Mountains, heavy rainfall, products of T639, cause analysis

摘要:

利用T639 0 场的预报资料分析新疆天山中部2009 年5 月25 ~ 26 日发生的罕见强降水天气过程的成因,结果表明: 700 hPa、850 hPa 上的辐合线、切变线和西南急流是强降水的直接影响天气系统,西南急流与冷空气的交汇形成了较强的动力辐合和水汽辐合,对强降水的发生起到了重要作用。强降水发生在较强的能量锋区、高湿区和水汽通量辐合区内。这次罕见强降水天气过程是高低空急流及高空锋区在中、高纬地区共同作用的结果,也是中、低纬度地区与高纬度动能、有效位能一次明显的交换过程。

关键词: 天山中部, 强降水, T639产品, 成因分析

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