远距离台风影响下的陕西大暴雨分析

干旱区研究 ›› 2011, Vol. 28 ›› Issue (3): 514-523.

远距离台风影响下的陕西大暴雨分析

李明¹, 高维英², 杜继稳³, 侯建忠¹

1. 陕西省气象台, 陕西西安 710014;
2. 西安市气象局, 陕西西安 710016;
3. 陕西省气象局, 陕西西安 710014

收稿日期:2010-06-02 修回日期:2010-09-26 出版日期:2011-06-25 发布日期:2011-09-06
作者简介:李明(1974-),男,新疆昌吉人,硕士研究生,主要从事天气预报及其衍生灾害气象预报研究工作.E-mail:lm0223@sina.com
基金资助:
陕西省气象局创新基金项目"远距离台风影响下的陕西大暴雨机理分析研究(2010M-5)";2011年中国气象局预报员专项"陕西区域性大暴雨典型个例预报技术总结(CMAYB2011-050)"和"西安多普勒天气雷达盲区强对流天气研究(2008M-16)"共同资助

Analysis on the Heavy Rainstorms in Shaanxi Province in Relation to Typhoon Far Away

LI Ming¹, GAO Wei-ying², DU Ji-wen³, HOU Jian-zhong¹

1. Shaanxi Meteorological Observatory, Xi'an 710014, China;
2. Xi'an Meteorological Bureau, Xi'an 710016, China;
3. Shaanxi Province Meteorological Bureau, Xi'an 710014, China

Received:2010-06-02 Revised:2010-09-26 Published:2011-06-25 Online:2011-09-06

摘要/Abstract

摘要： 应用NCEP再分析资料和常规地面观测资料,对陕西发生的3次与台风有关的大暴雨天气,从环流背景、动力、热力、水汽条件等方面综合分析。结果表明:3次过程中国大陆中东部存在高压系统,使西风槽或高原槽进入河套移动缓慢;台风主要作用是外围东风气流为河套输送大量水汽或使孟加拉湾和南海的暖湿气流向北输送。大暴雨位于850 hPa锋生中心或锋生轴线附近;高空急流轴的走向对大暴雨落区有重要作用;在地面锋区上中β尺度"Ω"系统能量比轴的暖湿气流端易激发中尺度对流云团。

关键词: 大暴雨, 台风, 环流背景, 水汽条件, 陕西

Abstract: This paper analyzes three rainstorms in Shaanxi Province in 21st century in relation to typhoon far away. The results show that there were the high-pressure systems over central-east Chinese Mainland, they made the westerly trough or plateau trough move slowly over the Great Bend of the Yellow River, the main function of typhoon was to transport a large amount of water vapor by its easterly wind, or to obstruct warm-wet air to flow eastward and drive warm and wet air to move northward into Shaanxi Province; the 200-hPa upper jet axis trend played an important role in the heavy rainstorms; the heavy rainstorms relied on the 850-hPa frontogenesis center or nearby frontogenesis axis; the warm-wet air end of energy ratio axis of "Ω" systems in surface cold front aroused easily the mesoscale convective cloud cluster.

Key words: heavy rainstorm, typhoon, circulation background, vapor conditions, Shaanxi Province

中图分类号:

P444

李明, 高维英, 杜继稳, 侯建忠. 远距离台风影响下的陕西大暴雨分析[J]. 干旱区研究, 2011, 28(3): 514-523.

LI Ming, GAO Wei-ying, DU Ji-wen, HOU Jian-zhong. Analysis on the Heavy Rainstorms in Shaanxi Province in Relation to Typhoon Far Away[J]. , 2011, 28(3): 514-523.

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